Typically a girl from Milwaukee but can be any girl. The girl proceeds to be eaten out by a guy, but she lays flat on her back and her legs are propped up like you would prop open a car hood. She then lubes her vaginal cavity and the outer rim with Reddi-whip or Crisco or anything white for that matter. She then instantaneously has her period all over the above said lube and the guy about to eat her out fills a red cup, like the ones seen at gay parlors,with the the substance. He then saves it for a rainy afternoon when he has nothing better to do but watch Sleepless In Seattle and listen to Chicago records that he stole from his ex girlfriend.
Man, Last night me and this skanky smelling fat ass bitch from Milwaukee made the meanest Milwaukee Red Cup evveerrrrr. I cant wait to drink it later!
by I-sack_1200 July 7, 2011
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A legend that lives on. RIP Robert Hulseman aka inventor of the red solo cup.
Dude 1:You want a beer?
Dude 2:Only if it's in a red solo cup
Dude 1: Ight cool
by Buttface McJuggerFuck March 26, 2017
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Similar to 'Thats what she said' but more sophisticated grown up, party slang. Used especially when alcoholic beverages are involved and they are disguised in red party cups.
*Party going on*

Sara: "...so then Ashliegh said to him, THATS TOO BIG!"

All: "woah! thats too big...IN A RED PARTY CUP!"
by Sathalina Garguciliss October 23, 2010
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A prominent icon in the college party culture. Once used for their value, they are now used to carry out the traditions of old days and don the imagery. Any images containing red solo cups normally invoke judgments from others, whether they be accurate or not (sometimes they only contain juice?)
Boss: I noticed this interesting picture of you with a red solo cup?
Worker: oh yeah, that was at a birthday party, we used red solo cups for juice! I promise I wasn't getting plastered or being stupid!
Boss: suuuure you were....
by UM North Quad August 14, 2011
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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.
by ccasey6 June 29, 2007
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Getting punched in the kidneys very hard but proceeding to jerk off while cupping your balls until completion with a mixture of blood and semen coming out
Dude I just red solo cupped my self but I think I need to go to the doctor.
by Bigglesmigglesthefiggles July 19, 2018
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When you walk into a local school function, and you can’t help but notice that the cups used to drink alcohol are red solo cups.
Terry walked into his New Year’s Eve party, only to realize that it was a red solo cup party. Terry got brain in five minutes.
by D’brickaJon Swaggins January 6, 2023
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