by Fiona Fingers February 5, 2013

Abbreviation for "You already know"
by Snaplatts January 15, 2021

Y. A. K. is the acronym for "Young Athletic Killers" which the only way someone could rech such status is to also have a huge penis.
Girl 1: hey I had sex with this guy last night, I could barely take him. :(
Girl 2: Yeah he must have been a YAK!
Girl 1: Yes I cried
Girl 2: Yeah he must have been a YAK!
Girl 1: Yes I cried
by UcanKallMeMrG July 12, 2010

by Kentucky Fried Asian July 20, 2008

by TCdubs February 28, 2011

by Kensamazinghotsauce September 12, 2018
