2 girls 1 cup is a disgusting video, but also is an internet phenomenon which is to trick your friends into watching it. Videos of reactions to watching 2 girls 1 cup are famous online.
case n#1:
"-hey, have u seen this video called 2girls1cup ? you should check it out, its hilarious
-ok, ill google it tonite"

case #2:
"-you motherfucker! that link you sent me was the nastiest shit ive ever seen
-oh, 2 girls 1 cup ? lol"
by kenny jahan November 7, 2007
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A medically common visual emetic, used to empty the gastrointestinal tract of various foodstuffs. May cause several hours of nausea afterward as a side effect.
Doc: hmmm, the syrup of ipecac failed to work, im going to prescribe a far stronger emetic, please watch 2 girls 1 cup
by Young Reezie December 11, 2009
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The most vile, disgusting, revolting, repulsive video on the internet. It involves two lesbians shitting and vomiting in a cup, then eating it.
Video at 2girls1cup.com. Try to watch it without flinching.
2 girls 1 cup. Trust me, its gross.
by Maserati November 16, 2007
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One of the most obscene Internet phenomena in existence. A girl drops a large mass of fecal manner into a glass cup, and proceeds with another girl to eat it. Both girls then take turns to gargle, swallow and regurgitate into each others mouths.
Person A: Did you know about 2 girls 1 cup?
Person B: No.
Person A: Let me show it to you.
(1 minute later)
Person B: That's totally gross, it can't be real... Why would someone do that shit? How drugged up should they not be able to smell it?

Person A: Who knows?
by predetol109 December 14, 2008
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A nasty and EXTREMELY disturbing video. WARNING!: Do not watch if you get sick very easily! It shows lots of poop and vomit going in and out of 2 girls' mouths. It's supposed to promote a XXX site.
Guy: Hey! have you seen 2 girls 1 cup?! They do LOTS of crazy things in that video!

Other guy: No way!! I'll watch when I get home!!!!

*next day*

Other guy: You Fucker!! My mom watched it with me now I'm never allowed to touch the computer again!!!
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a video in which a girl is sucking anothers tit, then boom! one girl shits in a cup but wait theres more its such a huge shit i couldnt shit that much. Then they start eating it. Not grossed out they puke it back up and eat again. this video is on 2girls1cup.com
aww man i puked when i saw that 2 girls 1 cup video!
by |,,|(/^_^)|,,| November 24, 2007
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One of the most disturbing web videos in existence. It involves two girls sharing a cup of feces, with feces eating, girl-girl feces swapping, feces regurigating between girls and feces re-consumption. Arguably competes with BME Pain Olympics as most disturbing video on the net.
Have you seen 2 girls 1 cup?

Yeah, I actually couldn't watch the whole thing without looking away. Those girls will do anything for drugs.
by Pierce Anthony November 16, 2007
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