Figures of speech

There was an almost empty bag of pepperoni that Bob and I were eating and I said to Bob, "You want me to kill it?".

Nathan gives me the weirdest look and says, "How do you kill pepperoni?"

Then later when Bob was serving the little pizzas he made, we told Nathan that the cheese pizza had his name written all over it. He's a smart kid because he said that his name was written in invisible ink.