(
Canadian usage)
1)To be verbally insolent,
belligerent or insubordinate;
2)To be mouthy to or backtalk someone;
3)To complain profusely about
something.
"I'd love to dig a new
trench, Sergeant. And if I
thought you knew what you were talking about, I might do it."
"Are you beaking off, Corporal?"
"He's still beaking off about losing the
election, and that was six months ago!"