flooberflop

A sex act involving one person laying one their back, lathering themselves in lubricant, after which another person performs a (usually large) jump onto the person covered in lubricant in an attempt to slide over the entirety of their body.

Tom: "Bro, did you hear that Sam flooberflopped Alex last week?"
Harry: "Yeah, he said it was like a slip n slide!"

Brumski

A group of people who like to ski, get very drunk, and serially fail their degrees.

"Hey, are you involved in Brumski?"

"Nah, I'd rather not repeat a year."