How can you tell a kangaroo from a zebra? You can't!
What orbits Jupiter and was the reason Johnny Carson quit the Tonight Show? Io!
I spent a week there yesterday—of course I was travelling at seven times the speed of light.
A weasel, a ferret, a donkey, a camel, an owl, and a priest walk into a bar. The weasel turns to the priest and asks, "What’s a man of the cloth doing in here?"