A 4-o is another word for a fourty ounce beer. Pronounced four-o or depenting on regional origin fo-o
by B-dub (refers to my age) December 26, 2005

by Jonny Fromundah December 29, 2002

by Queen-Of-Despair January 21, 2018

by tville August 27, 2003

A 4 point O gasm is the euphoria you feel when you discover you've just received a 4.0, in a single class or for an entire semester
by RazMutant July 31, 2013
