Definitions by yaaaastfu

gsy 

A terrible song by female singer "Avery", and it can mean "Go screw yourself" Probably most appropriate used on someone ignorant or annoying to get them to go away or leave you alone.

Boy: ey gurl you lookd rele gud today

Girl: ugh, gsy and stop texting me.

Boy: fine bye but wy yu gotta b lyk that

gsy by yaaaastfu November 14, 2011