That popcorn was a memory of mine. My parents always drove me into town to Friday movies. It was a different time, and I'd get dropped off at seven and then picked up at nine. I'd get a small bucket or bag of popcorn, extra buttery, and then I'd take a magical journey.
I thought Severus might have turned to the matinees when he was away from the Wizarding world.
I'm very glad I could ease a bit of the ill. Fics and books have saved my sanity while I'm sick, many a time.