Top five: punchlines to jokes I find more amusing than they actually are

1. 'No'. From - Little Green Man
2. 'Giving it all of that'. From - Crab walks into a bar
3. 'I'm a prawn again, Christian!'. From - Prawn again
4. 'I'm afraid he's blind'. From - Mrs Boomer's Baby
5. 'Nacho cheese'. From -  Nacho Cheese

Sadly, I made myself laugh just writing this post and thinking about the punch lines.