When pounding the vagina at a high rate of speed, you miss the vagina and jab the asshole by mistake.
"Hillary, why are you walking like a duck"? "Uhhg, that asshole from the bar last night gave me a starfish surprise".
by Ben Fugin Cho Mamma July 10, 2012
Get the starfish surprisemug. When during the course of sex you slip your member into your partners ass without mentioning it first.
by Gators #1 September 16, 2009
Get the Starfish Surprisemug.