Mother Ship Puns

My college roommate's dad had a brilliant way of taking well-known jokes and butchering the punchlines. Could be fun when your kids are slightly older. A couple memorable examples:

• A pirate walks into a bar with a ship's wheel sticking out of his pants. The bartender pours him a beer, and remarks that the wheel looks uncomfortable. The pirate replies, "Yar! It's steering me balls."
• Two cannibals are having dinner. The first one says "my mother-in-law tastes awful." The other replies "then have some more potatoes."
• How do you make a salad wrap? Just add drums!