What's All the Stink About?

This is a conversation my niece Meaghan and I had this afternoon.

Meaghan: "My friend has a brother named Cooper."

Me: "Oh."

Meaghan: "I can't say this outloud," she said, looking naughty. "You know what Cooper rhymes with?"

Sadly, my mind had already gone there. Meaghan walked over to me, so as not to corrupt Jack's young mind, and whispered, "Cooper, pooper."

Poor Cooper, soon to be the butt of future jokes.