I clam up a bit in situations where I'm conversing with people I don't know well. I don't get shy, but I do carefully filter what kind of jokes I'll make. I'll exclude the penis jokes, the killing jokes, and the mainstay of my normal conversations, the I'm-gay jokes. Instead, I rely upon about three different joke types. They are:

1) Combining words.

If someone makes a comment like "I work in the cancer ward of a Children's Hospital", I'll pipe in with "Chospital! Childspital! Chospdrenital!" It always slays.

2) Absurdly commenting that I do whatever is the topic of conversation.

For example, I was at a party once where guests were discussing the host's art. One painting in particular combined Japanese imagery and characters with social commentary. I nodded in agreement at the analysis and offered, "I go for the same effect with my Java software."

Or, more obviously, if a bunch of women are discussing their periods, it's almost guaranteed that I'll exclaim, "You too?! I'm bleeding like a stuck pig RIGHT DAMN NOW!"

Everyone enjoys that one.

3) Taking anyone's comment to its logical extreme.

I had a good example of this with Hank the other day. During dinner we had this conversation, while eating our oven-baked french fries:

Daisy: Are there any more fries?
Hank: Nope. That's it. Next time I want to make tater tots, but those are hard.
Me: No they're not. They're just like these fries. You open the bag, heat 'em up, and ta dah! Tater tots!
Hank: No, not frozen ones. They'll be so good if they're fresh and home-made.
Me: Oh! You know what's really good?
Hank: What?
Me: Home-made water! You take some really fresh hydrogen and some organic oxygen and combine them. Ohhhhhhh, so good! Mmmmmm! Home-made!
Hank: Uh huh.
Me: It just explodes with freshness! Or it just explodes.

And I wonder why I don't make friends easily.