Definitions by XxDxX
gash back
something or (someone) that is so completely and utterly gash, they qualify for gash back. in short, gash of epic proportions. or just generally a term for skanks, who spend the majority of their time on their backs.
you're more than a slut, you're a walking gash back.
OR
stop talking shit, i didn't ask for gash back.
OR
stop talking shit, i didn't ask for gash back.