the action of getting absolutely window washed ferda boys
Hunter: Where’s Jack?
Barney: He’s at the biggest party of the year getting absolutely finned up.
phrase used to describe a man or woman on the prowl. May be for a mate, sexual encounter, endeavor, location, or other discernible goal. May be demonstrated with palm extended (edge forward) from the forehead, as a shark fin.
"There goes Brad, after that floozy. (he/she's got) a fin up!"
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When you strip down nude and put a flip flop or sandal in you but crack and do a push up. You look like a shark who cares about upper body strength.
I bet you 2 ramen you wont do a shark fin push up in the red yard.