NUCLEAR WASTE  

1 measure blue curacao
1 measure Bailey's Irish Cream
top up with one pint cider (or lager if you prefer)

The end result is a sort of greenish-brown liquid with a thick
layer of scum on top. Tastes wonderful, though, especially if you
dunk chocolate bars in. (These are referred to as Control Rods,
and the bar of preference is a Toffee Crisp, if only because the
crisped rice pieces start floating around in the drink and making
it look even nastier.)

Variation: Mix blue curacao and orange juice (and optionally,
vodka).  Everything turns a nice shade of fluorescent green.