Little Johnny sat playing in the garden. When his mother came out to collect him, she saw that he was slowly eating a worm. She turned pale. "No, Johnny! Stop! That's horrible! You can't eat worms!"
Trying to convince him further the mothers says, "Now the mother worm is looking all over for her nice baby-worm." "No, she isn't," said Johnny. "Why not?" "Because I ate her first!"