The antonym of Talkin' Trash. The belittling of one's abilities or achivements, especially in a competitive setting, going beyond being humble.
A: You're gramps could probably beat me in an arm wrestling match.
B: C'mmon dude, you just beat the strongest guy in gym class.
A: I just got lucky there...
B: Quit, talkin' brand new goods and lets do this!
(A smokes B in said arm wrestling match)
A term used when someone does something or something happens that is completely unexpected or out of the ordinary. Or in some cases just pisses you off.
The way Sarah talked to me last night was Real Brand New.