an anti-joke.
You can mash potatoes, but you can't pee soup. (sorry sorry. Really. I've loved this joke since I was... oh.. six...)
To recycle a joke from the other side.
3-year-old: Woof woof. Me: Horses 3: Neigh. Me: Pigs 3: Sizzle sizzle. Somebody understands bacon.
The Sound of Sirens