Harry winced as the knife slashed down on his thumb. "Damn it," he mumbled, running his finger under the sink.

From somewhere below him came a gasp. He looked into Lily's wide eyes.

"You swore!" she cried, and Ginny looked up from the table. "You owe a knut to the Naughty Jar!"

Harry raised his eyebrows when Ginny said, "Go get it, Lil."

"Ginny," Harry protested as his daughter held out the jar.

Ginny only shook her head. "You made the rule, darling."

Harry sighed and fished around in his pocket. "Yeah, but I didn't intend to fund the thing."