The motion some women and mostly soul divas make with their necks when giving their men attitude. Not an easily accomplished motion involving moving the head and neck in opposite directions.
dude 1: Hey dude, why you so down?
dude 2: dude, ma girl dumped me last night, she was all up in my face saying "you don't own me" and giving me hella Neckttitude.
dude 1: sounds rough dude, I hate that. Tried giving it back once and ended up in hospital.
dude 1: dude....