When you have studied for an exam only to find out that the questions on the exam have nothing to do with what you had reviewed.
I got exambushed on my philosophy exam.
A guy that is such a flaming homosexual that the only way to describe him would be with lava, hence Lava Golem
Dude 1: Did you see the Lava Golem walk by?
Dude 2: What the hell? Are we in San Francisco?