buttnovator

Someone who makes things up by pulling it out of their butt.

Bob is a buttnovator. He totally pulled that word out of his butt.

buttnovator by AdamK May 19, 2008

buttnovate 

To make something up by pulling it out of your butt.

Buttnovator: When I can't think of a word that matches what I'm trying to say, I just buttnovate.

Clueless: What? You buttnovate?

Buttnovator: Yep, I pull it out of my butt.

buttnovate by AdamK December 9, 2008