it's my life

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, "Now the mother worm is looking all over for her nice baby-worm."
"No, she isn't," said Little Johnny.
"Why not?" said the mother.
"Because I ate her first!"