A/N:
Harry Potter Halloween Collection Prompt: (object) coffin
The Restricted Collection Prompt: nothing but dialogue
Grongotts Wizarding Prompt Bank Prompts: Once Upon A Time dialogue prompt: "Are you insane?"/ "Yes, I am."
"You want to get a coffin?"
"That's what I said."
"Are you insane?"
"Yes, I am."
"Sirius, really, what do we need a coffin for? You planning on killing me sometime soon?"
"I want to dress up as a vampire for Halloween, stand the coffin up by the front door, and pop out at kids when they come up to the door for candy."
"That's a very bad idea. And just plain mean."
"No. It's called mischief, Marlene. It's what I'm good at."
"Too good. We're not getting a coffin. End of discussion."
"But come on, it's perfect!"
"I'll not have angry parents wanting to yell at me when you give their children heart attacks!"
"Fine. Can we get a real vampire to do it instead?"
"I swear, one of these days your stupidity is going to kill me."