FymX2 Share definition Flag An acronym for: FUCK YOUR MOM TWICE. Little Billy became irate and yelled FYMX2. Dude-man just got FymX2'ed in the face. FymX2 Crew owns you. FymX2 by FrigApple February 24, 2009 0 0 Get merch Get the FymX2 mug. Buy Now — $32.95 See more merch
