A "cool party" in which faggots get together with their "friends" and partake in drinking alcohol (or fucking coors light) from plastic cups and take many pictures of themselves posing with the cups to then later upload to facebook to show everyone how fucking cool they are.
"YOOO bro! i was so wasted last night at matt's house... i mean you can clearly see from all the facebook pix!! i don't even remember it!"
"i guess that faggot was at a plastic cup party last night"
"i guess that faggot was at a plastic cup party last night"
by Skate Jibbergoon Bitch August 6, 2009
a party where alcohol is served (often from a keg) in red plastic cups, usually attended by college students
by ccasey6 June 29, 2007