With a shrug, James turned from his friend and stared at Sirius for a minute longer, disgusted and equally mesmerised by the scene unfolding before them. It certainly didn't sound like Sirius, but to see the familiar features doing such awful things...
Something in James hardened and he quickly ducked out from under the cloak, pointing his wand at Sirius and swiftly uttering the stunning spell. He didn't even think before he leaned forward to check on Sirius with one hand while tucking his wand into his trousers pocket with the other before vigorously waving Remus over.
"Come on, let's just get him under the cloak for now," James whispered harshly, as though afraid that his spell didn't work or that anyone would pounce on them at any moment. He was just now starting to regret being half starkers as the cold prickled his skin up into goose flesh.