G.M.A.F.B. (Give me a fuckin' break!)
G. M. A. F. B. is when someone is whining about nothing and you just want to punch them. You don't need a thousand words about their feelings. Just shut up and take a nap.
I didn't get the last slice of pizza. G. M. A. F. B.
My dog barked at me. G. M. A. F. B.
I had to walk to school. G. M. A. F. B.