A teenage boy tells his father, "Dad, there's trouble with the car, it has water in the carburetor." The father looks confused and says, "Water in the carburetor, that's ridiculous!" But the son insists. "I tell you, the car has water in the carburetor."
His father, starting to get a little nervous, says "You don't even know what a carburetor is.... but I will check it out. Where is the car?"
"In the pool," replies the son.