A toy with a pulsation in it?

I got drunk with my husband and we talked about our sexual desires, libidos and fantasies. I admit that I (a woman) get aroused when watching tentacle porn, simply because of the unique movements they make in the animations, and I wanted to find a toy that could mimic the pulsating motion of a tentacle, where the girth expands and contracts back and forth. Is there such a thing?

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