Top Definition
1ST5 is the best ST class in Trondheim - Norway. Their grades are ranked as #1 among the schools in Norway and they are all extremely awesome people. The members of 1ST5 are a bunch of bad ass motherfuckers that always win in whatever they do and their teamwork is awesome. Mess with 1ST5 and you will get raped in your sleep.
Guy: Wow that dude is so smart and awesome!
Girl: DUH, he's from 1ST5!
by Smågodt November 05, 2010
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