mashman

An illegal firearms dealer, slang specifically used in the Greater London Metropolitan Area

"Buck me my slime, there's a new mashman on the block."

wake-up juice

Scottish Slang for the alcoholic beverage "Dragon Soops." a popular Carbonated, Caffeinated Alcohol Beverage in Scotland.
Often used by both the roadman/chav community and Alt community who enjoy the beverage equally when causing raucous in the street.

"Ay wee man, buck me some wake-up juice."

A: "Oh nice, dragon soops."
B: "Aye, that's the wake-up juice."

Mash

a gun of any kind.

derived from 'machine' as in machine gun/machine pistol

slang mainly used in the Greater London Metropolitan Area

"Keep getting lippy bruv', I'll back out my mash and show you who's top dog round these ends."