Argued Until The End Of Time

(It’s my sister’s tenth birthday, but I’ve been telling her she’s turning eight. This happens as she’s going to bed.)

Me: “Goodnight, eight-year-old girl.”

Sister: “Hey! I’m ten!”

Me: “You’re eight.”

Sister: “No, I’m ten!”

Me: “No, you’re eight.”

Sister: “Ten to infinity. I win!”

Me: “Ten times infinity TO THE POWER OF BIG SISTER. I win.”

(She came back into my room to make a face at me, but she didn’t try to argue anymore.)