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An act that requires three participants (gender does not matter), and involves one participant either fisting the anus or vagina of the second participant, while a third participant fists the mouth of the second participant. The two (participants 1 and 3) then bump fists inside the organs of the second participant and then pull out allowing the the second participant to then vomit/shit his entrails onto the floor/bed/table/etc..
Anthony was able to convince Shaun and Joey to try bulimic bro fisting, needless to say Anthony didn't come out of that one with a clean carpet.
by Skee Daddy March 29, 2011
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