shorthand for the video featured on the 2girls1cup web site featuring a disturbingly viral scat porn video. Multiple response videos and parodies have been posted on mainstream sites such as youtube.
dude 1: WTF are you doing IM'ing me that sick shit????
dude 2: Huh-huh, the cupgirls rock. I showed it to my grandmom like that one guy in that video on youtube.