The act of making two people's buttholes touch together.
Mouth kissing grosses me out; but I'd love to twin starfish kiss with you.
by Hamlet Lynn September 21, 2019
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(1) People who like to have anal together. (2) Frat guys who like to smash their buttholes against each other
Bro Have you tried starfish kissing it’s fucking great
by mr. insentia November 17, 2017
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