Remus lets out a nervous laugh, despite his show of bravado; he's glad it worked, sure, but now he has to square up and put his money where his mouth is.

Or, well, maybe the other way around.

He drops his rag back in the water bucket and then reaches his other hand up to shove his hair out of his face.

"Yeah? Right. 'Course. I'm listening."

Even though he most certainly doesn't need it spelled out for him. He kind of just wants to make Sirius say it.