Behind the Screen: What amuses you?

After Friday's post, it has become increasingly clear (thank you, commenters) that I am easily amused. It appears that I tend to fall for most old jokes at least once, and that must be why I currently love our D&D group.

You see, in addition to featuring everyone's favorite non-sequitor generator Vanir we also feature a few members of our group that delight in horrifyingly severe puns. And they're almost always funny once.

So rampant and severe the rate of punning, we had to institute an "out of character" demarcation to determine when a joke was being cracked and when the player was acting in character. (This should clue you in as to the level of seriousness that most of our campaigns attain.) In our group, holding up a piece of paper is the way to tell the GM that whatever it is to come spewing out of your word-hole next is not to be considered in-character. It is usually quite effective, until someone in your group realizes that by holding up a piece of paper they can speak freely and frequently for the whole session We all have our crosses to bear!

So that leads me to the question of the day: Does your group fall back on any humor/movie quote/funny stuff when nothing else presents itself? How do you manage things when the line blurs between character acting and player venting?

I know some groups continually fall back on Princess Bride quotes, Monty Python sketches, or Slayer lyrics. So what does it for your group? Whatever it is, I guarantee you I will fall for it at least once!