Wet.
A kangamoo!
Kung Food!
Because what's good the goose is good for Merganser.
Disclaimer: I don't know how well this joke will work in English. What's yellow and lies in a pond? An excevator. You don't think this is funny? Neither does the operator.
Wet noses
1. wets toothbrush 2. puts toothpaste on toothbrush 3. wets toothbrush again 4. does backflip on to huge pile of money