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1.
n. Snake bite and black, snakey b, fighting juice etc.

An intoxicating mixture of cider, beer and blackcurrent (preferably cheap, not Ribena).

Best made with ludicrously strong scrumpy and Tenants' Super.
Mate, let's hit the purple nasty and get proper cunted.

or,

Fuck, dude, look at that vom! He's totally been on the purple nasty!
by denzille May 14, 2005