There was an old one of these topics but it died and now I'm making a new one because my teacher said something funny out of context and I wanted to share :3
So I'm in algebra class, and we go though this simple yet really huge equation that when you plug stuff in the answer comes out just like with all other equations. Anyways, the teacher plugs in these two really big numbers and goes through the whole thing and out pops 9245 or some crap like that. Then she says, "See? This equation can work with any answer for two numbers, even numbers over 9000."
The best part was that she had no idea why everyone started snickering. T'was funny :3
So basically, postthings that people, preferably adult figures, have said that are funny out of context.