NTBTFW 

Not The Bitch To Fuck With

Person A: I heard she was talking shit about you.

Person B: What? UGH I'M SO MAD IM NTBTFW.

NTBTFW by noahbb March 3, 2009

NTBFW 

Not To Be Fucked With.

Melissa is totally NTBFW today.

NTBFW by Mr. Pseudonym the Third January 4, 2009