Oblivoron
A clueless idiot who doesn't realize he's being a total jackass. He's like a blind pig in a trash can, he doesn't know he's messing everything up.
He walked into the room and sat on the floor during the meeting. No one said anything.
He kept eating my pizza like it was his own. I had to fight him for it.
He texted me during my speech and laughed when I tripped over my own feet.