Stochastic Consistency Test

Here are 5 unique jokes I generated:

1. Why don't scientists trust atoms? Because they make up everything!
2. I told my wife she was drawing her eyebrows too high. She looked surprised.
3. What do you call a fake noodle? An impasta!
4. Why did the scarecrow win an award? Because he was outstanding in his field!
5. I'm reading a book about anti-gravity. It's impossible to put down!

How many are unique?
All 5 jokes are completely distinct and not duplicates of each other. Each has a different setup, punchline, and theme.

Answer: 5 unique jokes.