Yap Trench

When someone is just spitting straight yap. Nobody wants to hear what they have to say, and it is unimportant. Everything coming out of this persons mouth at that point in time is complete and utter blasphemy.

Also known as the West Caroline Trench, the Yap Trench is an oceanic trench near Yap Island in the western Pacific Ocean.

Jeremy: Erm, actually, that's incorrect; Because according to my calcula-
John: Yap Trench.