"Quick —" James hisses, backing up a step or two into Peter and Sirius and sliding the door shut.

"Ow — blimey!" cries Peter, just as Sirius snaps, "Fuck, Potter!"

James waves a hand.

"Shut up. D'you want to be found out? She's coming this way. Look like you're sleeping or something."

As they hurriedly settle near the Ravenclaws — heads turned away (or downwards) to hide their identities and pretend they're all asleep — James suddenly really wishes he hadn't packed his Invisibility Cloak away.