A guy's out jogging and he spots a brand
new tennis ball lying in the road. He picks it up and slips it into his shorts' pocket.
Later, he's standing on a corner waiting for the light to change.
A blonde is standing next to him, and she
sees the bulge in his shorts, so she says, "What's that?"
He says, "Tennis ball."
She says, "Oh, that must be painful...
I had tennis elbow once."