The trouble with these "funniest joke" surveys is that they usually end up with a joke that most people find fairly funny, but hardly anyone actually thinks is the funniest joke they know. Thats because we all have such different senses of humour that we find different jokes really funny, while others find the same ones not funny at all. So the best rating tends to go to the mediocre joke that most people give a fairly positive rating to.

My favourite jokes at the moments are ones with the following punchlines:

"It's driving me nuts"
"The peanuts are complimentary and the cigarette machine is out of order"
"It's not a lion, it's a giraffe"
and
"He's a total cyclepath"

If you don't know them, see if you can work out the joke from the punchline.

Bagpuss