When I was nineteen, my family attended a costume party. I always thought it was lame, and I didn’t expect to wear clothes. So I’m going to hide somewhere and wait for the party. But when we arrived at a friend’s house, there were already a lot of people there. It looks like the entire community has appeared.

I groaned inwardly and went in with my parents and sister. She is two years older than me and is a healthy nut. She’s been watching what she eats so she’s probably the best body I’ve ever seen. She was wearing this big tiger suit at the party, which was too big for her. She could barely move around, her mask was huge, and she looked like a huge plush doll.

I was wearing some stupid alien costumes I found in the attic. It was too small for me and in the first few minutes I ripped it apart. I don’t quite like this party.

My sister Erin found me sitting quietly in the corner. She had a drink in her hand and she could barely wear tiger costumes.

“Hey,” she said. “What are you doing here all the time?”

I shrugged. “Just wait for the party.”

She handed me her wine. I took a sip and shrank. It has a lot of wine in it. Even if our parents didn’t like me drinking underage, she always asked me to try her drink.

“Is there no one here to talk to you? Is there no cute girls?”

I rolled my eyes. “Gimme took a break. I didn’t meet anyone.”

She sighed. “Yes, you’re right. This community sucks.”

I took another sip. “I tore my suit apart, too.”

She looked at my legs and cried. “I think your alien suit has surpassed it.”

I said to her, “You look like you’re drowned in that.”

She took off her mask. “Yes, it’s very hot here too.”

She drank a drink and we were both quiet for a while. Then Erin smiled.

“Do you want to have some fun? Come here with me.”

I was a little surprised. She is not usually the “comfort” I am with me, maybe alcohol will affect her. But I never refused to have close contact with a hot girl.

“Are you serious?” I asked.

She shrugged. “Yes, it’ll be fun. There’s definitely plenty of room here. We’ll see how long it will take for mom and dad to find you.”

She tried to reach out her clothes, but she couldn’t extend that far.

“You have to unzip me, and I can’t open it alone.”

I pulled the zipper down and saw her wearing only her bra and panties under her outfit. I’m a little nervous. Erin waited for me to finish the zipper, and then she must remember the clothes she was wearing.

“Oh, sorry, I forgot that I was wearing my underwear. It got so hot here, I don’t think I’d take it off.”

I don’t know if she still wants me to climb up, so I did nothing.

“Okay,” she said finally. “Keep going, I won’t back down now.”

I pulled the zipper all the way to the end above her butt and walked into the outfit behind her.

“Wait,” she said. “Take off your alien suit and you can’t get here.”

I hesitated. “But I don’t wear much.”

She shrugged. “so what?”

I looked at her panties again, and the butt inside was both clumsy”, and immediately took off her suit and glanced to make sure no one could see us. I threw the alien suit into the corner and stood in the boxer. I walked into the suit and suddenly felt the warmth of Erin’s body. I was pressed against her back, my pants lined up on her ass. It was a little embarrassing, but I quickly reached behind and pulled my suit up.

The face had a little tightness and my face ended up falling on her hair, but the feeling of my body being pressed against me was distracted. She adapted to the feeling of both of us in the suit.

“It’s so funny,” she said. “Can we even go with this?”

“Try it,” I said. “As long as I start walking, I will follow your leader.”

She walked forward and pulled her legs. Our pace slowed down and we started walking. It must have looked fun outside, but no one noticed us. It was so exciting to let her warm skin touch me. The feeling of her body being hit by my body began to open me. Suddenly, Erin stopped walking and just stood there.

I wondered why she stopped and then began to realize that I had an erection. It was firmly tied between her butt cheeks, only my boxer and her panties. She just stood there and said nothing. I think her butt is a little moved, maybe it’s to see if it’s really my dick pressing on her. But she didn’t say a word.

Then, a moment after she stopped, she started walking again. She still said nothing until we reached the stairs.

Erin said, “I have to go to the bathroom.”

We struggled a little while up the stairs, but we went to the bathroom. I untied my clothes and closed the door behind us.

We both breathed a sigh of relief after the hot tiger suit was closed. Before I said anything, Erin completely walked out of her suit and went to the bathroom.

“You…want me to leave?” I asked.

“Do you want to wear that outfit? It will take us away.”

She lifted the lid, pulled her panties down, and was right in front of me. I couldn’t help staring at her, she didn’t even try to cover herself up. She sat in the bathroom, her eyes wandering on my pants. I followed her eyes and saw my erection pressing clearly in the boxer. The suit has a sagging waist. I pulled up my suit and avoided my own vision.

Erin finished and washed his hands before returning to me. She just stood there and hadn’t crawled back yet.

“Oh, it’s hot there, isn’t it?” she said.

“Yes,” I said.

She just stood there, looking down at my pants. My suit covered me, but it was obvious that she was looking for where my erection was.

“You need…you know?” she asked.

I don’t know what she means.

“What?” I asked.

She smiled a little and looked up at me.

“You know,” she said. “You seem to need to…relieve yourself.”

I can’t believe what she said. “What? No, I don’t…I mean, of course not. I’m not…not you…”

“Of course it’s me,” she said. “I just don’t know if you… it’s hard, you know, because you need it.”

I have never felt embarrassed in my life. “I’m sorry, I don’t want to… you know.”

She shook her head. “No, it’s okay. You know?”

At this moment, she reached behind her back and unbuttoned her bra. She took it off in front of me and threw it aside. She then hooked her thumbs into her panties and pulled them down. I watched in total shock when she kicked them off and stood completely naked in front of me. I always thought she had a great body before, but it was so hot to see her naked body!

She paused for a second, as if giving me a complete vision.

“Don’t say anything, just take off your shorts,” she said.

I was too shocked to argue and I was immediately followed. Erin’s eyes were stuck to my dick. She couldn’t take her eyes off it. I feel a little shy, but at the same time I feel proud. Then she put on her suit and our bodies were pressed together again as we pulled tight. Of course, the feeling of nakedness was completely different, my dick was buried between Erin’s butt cheeks. She also felt much warmer and when we adapted to each other again, I knew I felt her more sensually opposed to me. Maybe she is going down. What I’m talking about, of course she is. Why did she take off her underwear?

I instinctively pushed my hips forward and she pressed me backward.

“Are you sure… don’t you need it?” She breathed, her voice was nonsense.

I kept myself close to her. “I don’t think this helps me.”

We stood quietly in front of the bathroom sink, pressing each other tightly. We both breathe heavily and Erin clutched my ass. I felt brave and took the first step. I pushed my dick further onto her ass and then slid down. Erin gasped, obviously loving the feeling. I did it again and she woke up again.

I started sliding up and down between her ass cheeks, fucking her ass without any penetration. She leaned against the table and leaned forward as I reached into her butt. It felt great because I was so hot that I felt my waist excited when I saw her naked body.

I said, “Wait, or I will cum.”

Erin said nothing, she ignored me completely and kept stretching her butt to me. I used this as a sign to keep going and then go in until I was boiling.

I grunt my dick, slamming my dick on her ass, firmly securing it between her cheeks as I shoot the load. I exploded her ass and shot backwards. I had spasms seven or eight times, more than I had in my life. I felt Erin get nervous when I return to the senses and she starts to tremble and groan. It took me a few seconds to realize she was reaching orgasm and didn’t even touch myself.

I waited for her to finish and when she calmed down I untied eight stocks because it got very hot there. Erin gasped and I saw my cum on the back of her.

“Your cum.” Erin panted. “This makes me very hot!”

She turned around, still inside the costume, putting her pants trake on my body. My cock pierced her belly. She moaned happily when she fell into mine.

“That’s great!” I said.

She smiled and said, “I kind of hope to lie down tonight.” “What do you say?”

I can’t believe she just wanted me to fuck her! After what just happened, it seemed just logical. She grabbed my dick and guided it to her pussy. I felt her hot hole when it hits the cock’s head.

“Are you sure?” I asked.

She smiled at me and nodded. I pushed forward and slowly entered her. Her head tilted back as I slid into her. She was so hot and wet that I kept going in without me knowing it. It felt good and made her cat tight around my dick. I started fucking her and she fucked me eagerly.

She leaned back on the table and I began to slam her. We really liked it and she started making noises that drove me crazy. If someone stood outside the bathroom, they would hear her voice. She held it on my arms, pulled her legs out of the costume, wrapping them around me. We were both fascinated when my dick slipped into her pussy. She started to make complaints and then cried at orgasm.

I was excited to feel her pussy clutching my cock tightly and I felt my orgasm was coming. I glanced at her and she nodded as if she had read my thoughts. Then, she longed to expect and waited for me to cum. I did my best and didn’t back down as much as I did. I groaned, releasing the semen to her abdomen. She hugged me tightly and milked her cat to aggravate my pleasure. I fell and hugged her body under me. Her legs were locked tightly on my waist. I felt her breasts pressing against my chest and her hands wandering on my back. She whispered, I’ll encourage me. I gave her everything I had and we both locked together and it was totally spent.

Finally, I stood up and withdrew my dick from my sister. We both were sweating, but it was a good sweat. Erin gently tracked his fingers on my chest, smiling.

She said, “You’re a good fuck.”

I leaned forward and kissed her for the first time. She seemed to love kissing me and when we kissed, I liked to feel her breasts. She leaned back and made me stare at them.

She said, “I can’t wait to suck your guy.”

I said, “Let’s get out of here.”

“I’ll tell mom and dad that we’ll go home. Let’s see how it feels like walking along the way.”

“Who knows, we might have to stop and rest.”

We both laughed. There is no doubt that we will touch each other’s brains tonight.