"I do bite," Remus replied dryly, accepting the potion. "And I will tell Sirius to be on time and to be nice, I promise."
Closing his eyes, he tipped the vial back into his mouth and tried to swallow in a single motion. The potion was...disgusting. The wolfsbane in it stung his throat on the way down and he doubled over, coughing and trying not to gag. He recovered himself and stood up straight again, wiping his watering eyes.
"Wow," he managed to gasp. "That is...foul. No offense to your skills, of course. Certainly clears the sinuses."
He sniffed wetly and set the vial down with a 'clink!'.
"I ought to get home," he said, pulling his scarf tighter around his neck. "Thank you, Severus. You've been very kind. I'd shake your hand but really, I shouldn't share this, even if you say you're not afraid."