A teacher asks the class to name things that end with 'tor' that eat things.
The first little boy Scotty says, "Alligator."
"Very good, that's a big word." congradulates the teacher
Then Little Susie boy says, "Predator."
"Yes, that's another big word. Well done!"
Little Johnny jumps up and says, "Vibrator, Miss."
After nearly falling off her chair, the teacher says, "That is a big word, but it doesn't eat anything Johnny?"
"Well my Mom has one and she says it eats f*cking batteries like there's no tomorrow!"