its pertaining to a childish person who acts like a child even in a serious matter, morons usually give a damn about everything they always want to be the man in every situation.
person 1: Oh my god, dude, my paper is missing.
person 2:maybe you should go check the no name pile. it looks like there's only one paper.
person1: no way that's mine, dude. I swear I think I put my name on it.
person 2: Oh my god, you're such a moron.
A person so stupid that they climb over a glass wall to see whats on the other side. Another example is a person that cant wrap their head around the fact to not be stupid.