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2.
Two people farting simultaneously while their butt cheeks are spread, and the butt-holes are pressed together.
Kevin went to the gay bar, looking for a starfish kiss.
by mmelebois August 30, 2011
 
1.
(1) the marks left on a bed after a particularly messy round of anal sex.

(2) The act of kissing the starfish, or analingus, performed by either a man or a woman, on either gender.
(1)
"Jenna left me starfish kisses after last night's fuckfest... Can you believe that nasty bitch?"

(2)
You liked those starfish kisses I gave you last night in the shower, didn't you? I knew you liked being rimmed... You just had to try it.
by Azaroth A. February 28, 2006