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A teacher asks the class to name things that end with 'tor' that eat things.

The first little boy says, "Alligator."
"Very good, that's a big word."

The second boy says, "Predator."
"Yes, that's another big word. Well done."

Little Johnny says, "Vibrator."

After nearly falling off her chair, she says,
"That is a big word, but it doesn't eat anything."

"Well my sister has one and she says it eats batteries like there's no tomorrow!"