Hurdles jokes

How does Stephen Hawking compete in the hurdles?

He ducks when he gets to them.

Did you hear about the guy who was afraid of hurdles? He got over it.

I used to have a fear of hurdles.

But I got over it.

I met a guy in a wheelchair today. His face was battered and bruised. "What happened to your face?" I asked.

"I'm a Paralympian," he replied.

"Boxing?"

"No, ... hurdles."