2 girls 1 cup owes it's origins to a film sharing the same title in which two young girls of appropriate age engage in socialy questionable acts including: consumption of one another's feces, consumtion of the regurgitated aforementioned feces, and aside from the shit and puke eating some pretty hot lesbian action. This having been explained, its defined currently as a description of anything traumatic and disgusting enough to shock, often relating to but not exclusive to the consumtion of vomit or feces.
Reginald: I say I say good sir have you seen the cinema film "The Human Centipede"? Farnsworth: No my good man I've not seen this feature would you recomend I take my best girl and her father? Reginald: Well my gentle sir I'd say that shits 2 girls 1 cup!
by FarleyWasGod December 3, 2010
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A painful reminder/wake up call to all guys that women do in fact shit... even the attractive ones. Ignorance is bliss isn't it?
Hey man where's Ashley?

She's probably taking a shit, she's been in the bathroom forever.

Dude girls don't shit!

Oh really? Watch 2 girls 1 cup, you won't thank me.
by santa's going TOTAL TANK January 2, 2011
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A "sequel" to the video who started it all --2 girls 1 cup. This shock video starts with a man opening a woman's vagina as the woman urinates into a pitcher. The man holds the pitcher as she urinates. The woman, then drinks the urine. After she drank it, the man urinates into that same pitcher. The girl drinks his urine. The video ends with the man pooping on the girl and then spreads and rub the feces on her.
Tom: Hey Jack!
Jack: Hey, man. Wassup?
Tom: Nothing, want to get some beer?
Jack: Uh...no thank you. I watched 1 girl 1 pitcher last night
Tom: What's that?
Jack: Google the video
*Tom Googles the video*
NEXT MORNING

Jack: Hey man, hows the video?
Tom: SHUT UP! You fuckin jackass!
by xXangelwolfXx March 7, 2011
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Worse than 2 girls 1 cup, goddamn, I didn't think it could get any worse...but it does.
Dude 1: 2 girls 1 finger is way more fucked up than 2girls1cup.

Dude 2: Yeh, I heard it killed the same grandma from the grandma reaction video to 2 girls 1 cup when she saw it.
by Fatty1234567 December 6, 2007
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A popular internet video that is similar to 2 girls 1 cup. In it, two women perform sexual acts on each other, with one of them defecating directly into the other's mouth.
If you thought 2 girls 1 cup was bad, wait till you see 2 girls 1 finger!
by G Roy December 5, 2007
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An overrated viral video in which two females make out. One of them poops chocolate ice cream into a cup, and both of them begin eating it.
I don't get why people are making such a big deal out of 2 girls 1 cup. The poop looked like ice cream! And it isn't the only coprophagous video on the internet.
by unicornbicycle May 28, 2009
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2 girls 1 cup is an Internet shock video that is f**king bad-ass horrible. It starts with one girl shitting into a cup, and then the two eat it. That's right, THEY EAT SHIT. And then, they THROW UP INTO EACH OTHER'S MOUTHS! IT'S F**KING SICK!
Dude 1: Hey dude, watch this vid!
Dude 2: OK, I'll HOLY SH**!!! WHAT THE F**K!?! YOU ARE A SICK MOTHERF**KER, MAN! WHAT THE F**K IS THIS??!! IT'S 2 GIRLS 1 CUP!! WHY???!! HOLY SH**!!!
by Grim LOLer May 27, 2010
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