On jokes

What is your favourite joke?
Here is one that I like; and I am prepared to accept losing friends as a result of presenting this here:

Chelsea have set up a call centre for fans who are troubled by their current form.
The number is 0800 10 10 10
Once again the number is … 0800 won nothing won nothing won nothing.

(You can of course simply cut the name of this team and replace it with that of another ...)

Over to you
Have you got a joke you can share here?