We all know that we have our badass funny and so forth lines that our characters have said. but What have we said out of game that brings you to laughter, joy, or groans?

Here's one of my favorites:
DM: Through the door you see 12 grimlocks and one really big one that looks like it's been mutated
Player: What's a Grimlok?
Me: Giant Robot Dinosaur.
<beat>
Player: Really?

Cue everybody laughing for five minutes.