One of my favorites is:
Q. How many elves does it take to sharpen a sword?
A. Three, one to do the sharpening, and two to compose a song about it so when the first one is done four hundred years later, they can remember whose sword it is.
Another good one:
A bard who specializes in ventrioloquism is performing in a tavern, doing several jokes about how dumb half-orcs are.
A very large, very mean-looking half-orc in the back of the room stands up and growls, "I'm sick of everyone making fun of half-orcs and saying we're stupid."
The bard begins to apologize for offending the half-orc.
The half-orc says, "Sir, I wasn't talking to you. I was talking to the little smart-a** sitting in your lap."
In our current homebrew, one of the PCs is from a kingdom called Solaria, so I've taken a bunch of the jokes and modified them so they make fun of Solarians. The character (and his player) nearly cry when my character says, "So I heard this joke today..."
