I don't find it funny when acquaintences are howling with laughter over stories of killing an animal.
Same goes for racist, sexist and otherwise horribly-stereotypical jokes.
At first viewing, Monty Python and the Holy Grail fit this category for me, but then when I started laughing with friends about different parts of it... "Well, I got better!"... "What is your nameeeeeee? What is your favorite colorrrrrr?..." and the Knights Who Say "Ni!" I realized it was far funnier after the fact.
I did not find Dodgeball to be funny. A few parts of Shaun of the Dead were, but I'm not a fan of zombie movies to begin with, so that's my disclaimer.
Q: How many poets does it take to change a light bulb? A: 1001...one to change the bulb, 1000 to say it's already been done.