What does De super mean?

"I'm just popping to the super for beer," he called from the doorway.

Dutch student slang. This is a Dutch word. You will hear it a lot at Dutch universities, student associations and in student houses.

Dutch students do their groceries at the super almost every day, often just for tonight's dinner. Students also use super as a booster, like in "superchill". You'll get used to it. Also read about iJskast, bs and broke student.