Answer:
What's get sharp the more you use it
Why do most married men die before their wives?
How many teenagers does it take to empty the trash, take it out, and put in a new garbage bag?
How did the computer get drunk?
If you're worried that grandpa will bite, just remove these.
What made Cyclops quit teaching?
Funny
Animal
Difficult
Easy
Food
Kids
Logic
What am I?