A teacher asked her third grade class to name things that ended with "tor"...and ate things.
The first child said "alligator". The teacher replied "very good Jimmy, that is a big word.
Another girl raised her hand. She said "predator". Again the teacher commented "Yes, thats another big word, Sally. Good for you.
Then little Johnny started frantically waving his hand from the back of class. Dutifully, the teache called on him. Little Johnny said "Vibrator". After nearly falling out of her chair the teacher said "That is a big word Johnny, but it doesn't eat anything. Johnny replied "well my mother has one and she says that it eats batteries like there is no tomorrow".