A mom and her son are taking a walk when they pass a homeless man fapping. The boy asks, "What is that man doing?" The mom says, "Making pizza," trying to turn him away.
The son sees a dog fucking another dog and he asks the same thing. She says, "Making extra cheese." When they pass a window and see a couple doing it, he asks the same thing. She says, "Ordering the pizza."
Later that day, the mother says to the father, "I think I want to order some pizza with extra cheese tonight, don't know why that sounds good."
So that night, the husband who was watching tv yelled up the stairs, "Wanna order some pizza!?"
The mother replied, "DON'T WORRY I'M MAKING SOME!"
The son's voice followed, "I'M ADDING EXTRA CHEESE!"