The word that swill-guzzling American college students have mutated to refer to cheap beer. Consumed in large quantities in seedy locales, these beverages largely constitute for a portion of the stupidity and bodily vastness of the current collegiate generation. Often, a term used by the Macho Asshole or Sports Prick to indicate their beverage of choice.
Dude, let's go the snatch mad brewskis from that chill kegger tonight.
What you call multiple beers if a) you're cluelessly still living in the 1980's; b) ironically pretending you're in an 80's teenage T&A film to underline that your life experience completely revolves around what you have watched on television.
If a) then cut that mullet. If b) no-one thinks you're cool, so stop it. Stop it right now.
"Dude... totally rad kegger. Pass the brewskis. Cowabunga! Is that Gary and Wyatt? Let's kick their butts!"