Derek huffs quietly, not quite a growl, and shoves his hands in his pockets. "I already went in and tried asking," he grumbles after a moment, obviously not pleased about sharing. "I'm banned." So maybe he hadn't actually asked per se. And maybe he'd been just a bit crazy... and there had been some mention of calling the police if he didn't leave immediately. Details aren't important, Stiles just needs to know he can't actually go back in.