Spurious South London
slang for "fists
". The action of giving someone an uppercut
to the jaw is, of course, like a piston
hitting the recipient's chin
. Used frequently in the Culky
columns of PC Zone
magazine around 1996, but possibly originating somewhere else.
Usage : "'E was givin' me some agro so I was sorely tempted to give him a taste of the old chin pistons."