OK no rib-ticklers allowed here, only groans.
Here's some to start you off:
Two pelicans were standing by a river. One said to the other "that's a good fish you've got there". The other replied "Well, it fits the bill"
Why couldn't the pony call for help? Because it was a little horse.
Why couldn't the bicycle stand up by itself? It was two tired.
Who put the cat out? I didn't know it was on fire.
Did you hear about the Italian Chef that died? He pasta way.
Milk is the fastest liquid on earth: its pasteurized before you even see it