Remus exited from his office at the back of the Manor, having been putting the final touches on a tea tray when the chimes sounded. He didn't want to leave Severus and Sirius alone for too long - he didn't think they'd do each other in, but there was no use taking any foolish chances, especially considering how erratic magic had become. One of them could go for a simple hex and end up turning the other into a newt, permanently.
Picking up the tray - which contained thick mugs rather than china cups - Remus carried it out by hand, not wanting to risk a sudden crash. He could hear the hint of frustration in Sirius' voice as he tried to get the enunciation of the word correct, but a glance at Severus assured him that it probably didn't have anything to do with any sniping between he and Sirius.
"Getting there, Padfoot," he said, giving Sirius a smile and raising the tea tray. "I've brought refreshments so you don't conjure yourself hoarse. Any conjuring of horses is purely beyond my control, I'm afraid."