ginasfs Share definition Flag Ginasfs is a Fall Out Boy song, and Internet 'slang' for gay is not a synonym for SHITTY, yes shitty, not stupid. :| Person 1: she is sew gay lolz!#@$^&#O66!! Person 2: GINASFS. ginasfs by MarianaPWSNYOU January 9, 2008 0 0 Get merch Get the ginasfs mug. Buy Now — $32.95 See more merch