Consider this example. How can we make the system more tolerant of humor? One option would be to have a joke checkbox (just like community wiki) on answers only (not questions).
Of course, if you check the box, "no rep for you."
EDIT: Just to clarify, when I asked the question, the linked answer was downvoted to -2 or -3. Now that it is back up to 0, some might construe my point as being that it should be voted higher. It wasn't. If it stayed at 0 I wouldn't have been prompted to ask the question.
Perhaps we could not allow voting on questions marked humor, and allowed those who don't want to see jokes filter them out?