My kids crack me up.
They think nuns are gnomes.
If you have an itch, you must have fleas.
All the lobsters in the tank at the grocery store died, and they had a ready explanation: A fox must have come in to the store in the middle of the night and eaten all the poor little lobsters.
Goliath is convinced that his grandfather is bald because he pulled out each little hair, one by one, in order to get a new hairstyle.
I'm sure I laughed before I was a mom, but I can't really remember much delightful, belly-aching, hold-your-sides laughter like what I have now. The best part is, they don't even KNOW they are funny!!