Severus made a face back at Regulus, but it turned to smug satisfaction as the other man followed as instructed, and therefore Severus bit back the retort he had planned.
"I'm impressed," Severus noticed the contraction he used and realized the alcohol was starting to kick in, force him to relax - it wasn't quite slurred speech, but it was a step down from the rigid vocabulary he adhered to. "Trying muggle traditions, and a Black to boot."
He took the bottle and poured each of them another shot.
"A few more of these little guys and the future will gladly fade back into a fuzzy haze, just like it ought to." Severus lifted his glass in a small toast, and then threw back the drink. The burn was still there and it still gave him pause, but he found this time that he didn't much care. The release of cares was indeed a reason to smile.