Laying on your back with arms and legs outstretched to make yourself look like a starfish, then inserting each hand and foot into a different woman's vagina.
"Is Zach done double-spocking his moms yet?"
"Yeah, but he's busy starfisting them now."
by SlipperySeaSnake69 June 16, 2014
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When engaging in coitus, an individual shoves one's hand up the vaginal canal while simultaneously opening their palm and spreading their fingers within the canal. Usually accompanied by the sudden declaration of "STARFIST!"Extremely painful to the vagina.
Jenny: "So what do you wanna do tonight?"

Forrest: "Well I don't kn--STARFIST!"

Jenny: "*&$*#($*%#*$#@#!#$(*%" "I didn't mean starfisting!"
by BrownManRah August 5, 2011
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entering a man or womans anus or vagina with a whole hand then opening the hand as far and as wide as possible within the body cavity
I gave her a starfist last night in the ass and could see my fingertips through her stomach
by cromaloop September 5, 2014
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The act of shoving your fist in a bucket of glitter paint, then proceeding to shove it in a woman's meat wallet.
Boy: "Hey baby, wanna go to the janitors closet and do the StarFist?"
Girl: "Only if you have a bucket of glitter paint."
by Jamalsis Evergreen November 3, 2020
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