I believe in making the world safe for our children, but not our children's children, because I don't think children should be having sex.
One thing kids like is to be tricked. For instance, I was going to take my nephew to Disneyland, but instead I drove him to an old burned-out warehouse. "Oh no," I said, "Disneyland burned down."
If you lived in the Dark Ages and you were a catapult operator, I bet the most common question people would ask is, "Can't you make it shoot farther?" "No, I'm sorry. That's as far as it shoots."