Disclaimer:…No, I don't not own Harry Potter. Happy?
Lily stared at Sirius Black and Fred Weasley disbelievingly. "You do realize that we're all dead and none of us use money, don't you?"
"Yes, of course," Sirius nodded.
"Um, also, you're the one who told me to pay back George," Fred nodded.
"Yes, but he's alive and uses money. You just took some money from your room in your flat and put it in his wallet. Neither of you could do that since your both dead!"
"Yes, but I left everything I owed to Harry. He left everything to George," Sirius pointed his thumb to Fred. "When George kisses Angelina, he could just remove ten galleons from George's account and put it in Harry's."
"What he means is that when Angelina kisses George that he could remove ten galleons from Harry's account and move it to George's, but yes, that would work," Fred said impressed.
Lily stared at them both. "You can't honestly think that that is a good idea! All that does is make Harry or George pay for your irresponsibility!"
"So? It once was his money!" Fred said grinning.
XXX
Several long, Fred and Sirius swearing-filled, extensive, agonizing months later, George got a message from Gringotts saying that ten galleons had been added to his account. "Why?" his girlfriend, Angelina, asked.
He shrugged. "I have no idea."
At the same time, Harry Potter got a letter saying that ten galleons had been removed from his account and they'd been added to George Weasley's.
XXX
"Well, it's only ten galleons. It's more work than it's worth to fix it," Harry said indifferently.
"You sure? Bill says that Gringotts almost never makes mistakes like that," George asked.
"Yeah, it is only ten galleons. Just keep it," Harry shrugged.
XXX
An owl flew through an open widow of Number Twelve Grimuald Place. Harry untied the letter around its leg. He didn't recognize the owl, so he assumed it was a rental owl.
Dear Harry,
I am so sorry about the money! I'm so irresponsible, but at the time I was goofing off. I'm getting the evil eye from Lily right now. Anyway, I'm really, really sorry.
-Sirius
Harry stared at the letter. Sirius? Someone was obviously playing a joke on him, but he couldn't think who this sounded like. He shrugged.
"What's that?" Ginny asked.
"Um, I'm not sure," Harry blinked.
"Okay," Ginny said just before kissing him. Immediately, Harry forgot about the letter.