plastic red cup 

1. a place where you consume alcohol at a party

Freddy: hey man, whats in that plastic red cup?

XuGu: oh, duh man, YOU KNOW, its alcohol.

plastic red cup by Chinese Jet Pilots August 25, 2005

red plastic cup party 

a party where alcohol is served (often from a keg) in red plastic cups, usually attended by college students

Jake is having a red plastic cup party while his parents are away.

red plastic cup party by ccasey6 July 31, 2007