Liquid chalk. A liquid version of the traditional block chalk that has been used to improve grip in weightlifting, climbing, and other sports that require grip strength.
The name derives from the texture of actual shark skin. Shark skin will allow a hand to move freely in one direction while halting the hand if it were to move in the opposite direction. Liquid chalk or sharkchalk goes on smooth, then grips.
A game where one person attempts to bite the butt of someone while walking up the stairs behind them. Usually the biter yells out "booty shark!" right before they attack.
POV: You are here from the definition of Urban Dictionary and decided to see what shark meant even though you already know what it means, and just want to see some random sexual definition.
Jimmy again: *looks for shark*
Shaniqua: ay lil timmy you ain gonna look up da definishin of shawrk becu you saw tha shi on th definitshin of urb dic right lil squart?