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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2 Girls 1 Cup is a perfect example of today's declining morals in society.

The video itself involves two women who are caressing each other's bodies, and then, it happens, one of the girls takes a massive dump, into a cup, then both of the women start consuming the feces.

At this point most viewers of the video can't think it can get much worse. They couldn't be much farther from the truth.

Shortly after consuming the shit the two women start vomiting. They are not only puking the poo out, but they are puking the shit right back into each other's mouths, or back in the cup.

The final part of the video concludes with the two bitches reconsuming the partially digested feces/vomit mixture.
2 Girls 1 Cup involves two(2) crazy ass bitches(girls) and a cup(1 cup), and lots and lots of poo.
by TJM91 January 26, 2009
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