A billion dollar pancake

Child: "Mom, are you upset if you lose a dollar?"
Mother: "Not too upset."
Child: "Are you sad?"
Mother: "I'm not too sad."
Child: "Then can you give me a dollar?"
Mother: "What do you need money for?"
Child: "To buy bubble gum to eat. You lost a dollar, you're not upset, you buy me candy, I can be happy for a long time. If you give me a dollar, I'll give you a billion when I grow up, buy you lots of delicious things. Please, pretty please."
Mother: "Alright, alright, here you go."