People are always asking you if you're going to have another child. They don't really care one way or another ... but your kid does.
"I need a friend who lives in my house and isn't a chinchilla."
"You're doing such a good job with one kid, I think it's time you got serious."
"No offense, but I really feel like this whole me, you, and Dad thing is kinda played."
"My friend has two little brothers and he doesn't need both of them, if you catch my drift."
"Just FYI, I read that children without siblings grow up to hate their parents."
"BUT I JUST BOUGHT THIS TANDEM BICYCLE."
"I would love him so much that you wouldn't have to love him at all!"
"If I get tired of having a little brother, we can trade him for something from the Humane Society."
"THAT'S where babies come from? PROVE IT."