The act of hooking up
with a less attractive college girl after midnight because of a lack of other options. It is transactional in nature; there is no sleeping over and it is a one-time occurrence.
"Phil, what'd you do last night"?
"Eh, just a bit of the 2 am shuffle"
Radical, tubular, cool, amazing
"Did you see me shred that gnar?"
"Yeah, that was totally noxious, brah".