1) - Doctor, I'm very nervous. This is the first time I needed an operation.
- Don't worry, I feel the same. This is the first operation I have ever performed.
2)- I didn't sing since I was two years old.
- No wonder you lost your voice.
3)- I had a lot of strange customers in my time.
- Have you ever shaved a man with a wooden leg?
- No. I always use a razor.
4) - Your dog chased a man on a bicycle.
- Don't be silly. My dog can't ride a bike.
5) - What do you do?
- I'm a sailor.
- Are you working on a submarine?
- No. I can't sleep with the windows closed.
