Snakebite
From Frikipedia
Inexplicably popular drink among students and lorry drivers (who will refer to it as Diesel).
Essentially consists of half a pint of cider and half a pint of lager mixed together finished off with some blackcurrent cordial.
What Oliver Reed would probably have given his kids if they asked for some Ribena.
Can be easily modified into a Super Snakebite.
