A fork of Rural Dictionary
When a person wearing a hoodie is uppercutted in the hood from behind. The resulting inside out hood is flattened, thereby looking like a "shark fin"
OMG TRAVEL SIZE2, Youve been shark finned!
To uppercut someone wearing a hoodie from behind, causing the hood to turn inside out. The resulting "fin" is flattened, and stood up straight.
LOL, Chicklette! You got shark finned!