YMG2C
Short for your mom/mother goes to college. It is an ultimate insult to the persons mother, for whom the joke is implied to.
Guy 1: Your nothing but a peice of sh*t
Guy 2: Oh yeah, well YMG2C :D
Guy 1. Tousche. :*(
Guy 2: Oh yeah, well YMG2C :D
Guy 1. Tousche. :*(