boss killer

Boss killer is a man with a huge ego that is never wrong subsequently drives everyone around him crazy .lack of human intelligence, needs lessons on communication, needs to pull what ever is up his bit out.boss killer

That boss killer is driving me insane

killer-boss

An idiot that thinks he/her is better at a competition/game but is really just bad and gets defensive about it.

person 1- woah, you see that dude. he challenged us to a 1v1 and I barely lost any hp.
person 2- yeah he was a real killer-boss