Hermione sat in the kitchen of the flat, pretending to read while nervously glancing at the door periodically. She couldn't help but watch the bucket that was precariously perched atop it.
Suddenly, the door opened and the bucket dumped water all over the man that had just walked in.
"What the hell?" Fred yelled as he picked up the bucket and stalked towards his girlfriend.
Between gasps of laughter she replied, "Sorry, Fred. It was payback for the Canary Creams!"
"Those were harmless! This could have hit my head and… I'm so proud of you! How'd you come up with that?"
"It's an old muggle prank, everyone knows it."
"Teach me sometime?" Fred asked, grinning.
"Nope. If you know all of my tricks you'll expect them."
"So, I'll just learn as you prank me?"
"Basically."