Green’s Dictionary of Slang

1. a mixture of strong beer and rough cider or scrumpy.

1996		Vlad’s Cider Rev. 🌐 16 Jan. So until I find something stronger, I will have to champion this one for the cider to use for an Anaconda here on this side of the pond.
2002		Ring of Goth Boiz 🌐 The Anaconda Snakebite is made with half a pint of Theakstons Old Peculiar (or another real ale) and a bottle of Diamond White or 1080 (or other strong dry cider), a dash of black and two straws. The drink has the colour and consistency of slightly congealed blood (some sort of reaction between the bitter and the cider). It allegedly turns to poison in your stomach and goes well with kebabs.

2. (N.Z. teen) the penis.

[1895		Here and There (London) 30 Mar. 93: Then she dances and winds the clammy worm about her neck, and if there’s a man in the audience wants to make her aquaintance after [this] exhibition it’s some man that owns an anaconda and wants to have it educated].
1997		implied in empty the anaconda
2003		McGill Reed Dict. of N.Z. Sl.