nah dude, nah

Elaborating on the term, nah dude. This term can be used in disagreement with any question or statement. Usually used in a chill tone of voice, relaxed.

Girlfriend: Twilight is the best movie ever!
Boyfriend: Nah dude, nah

Friend 1: Hey did you fuck that fat chick?
Friend 2: Nah dude, nah