Formerly having been drenched in a goop that some fifth-year Hufflepuff accidentally spilled on him as they went bumbling through the hallways, Sirius felt comfort in his robes and ran his hand through his hair before bursting through the front door of the Hog's Head. His entrance gained a few cheers from the lingering late night patrons of the slightly sleazy bar stop and he pumped a fist in the air before seating himself a few bar stools away from Severus.
"Jim, Jim, Jim... let me get firewhiskey, straight up?" He paused surveying the less-than-lively crowd. "Make it a double. Got any music?"
The aforementioned Jim went about getting Sirius his drink and, with a slight smile, placed it down. "Of course, just now singing along now, all right mate?" He clapped Sirius' shoulder before waving his wand for some old school music.
"I make no promises," he smart-assed back, downing his shot quickly.