Re: Severus, Al
"I thought you'd spent enough time in the lab to realise how essential it is to use the correct tools for the job," Snape admonished Al - though it was really quite gentle, at least according to Snape's own yardstick.
"You should use a shot glass. The smaller size and clarity offers the advantage of easier monitoring of consumption." In the interest of fairness he forced himself to concede, "Though your other precautions - imbibing in bed, with water and Hangover Potion to hand - are acceptable."