A street term for cocaine. They say it originated from the poshest backstreets of Wimbledon, London where affluent young private school boys would flaunt their parents hard-earned cash on the white powder to fuel a night on the prowl, to make up for their low self-esteem and penis girth and to try and emulate the heroic/inspiring acts of Jordan Belfort a.k.a The Wolf of Wall Street.

to tell someone to calm down and relax.