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Someone who gets drunk off a small amount of alcohol.

Cadbury's chocolate blocks are advertised as having a "glass and a half of full cream dairy milk" in every block.

A "Cadbury drinker" gets pissed off about a glass and a half of beer.
Look mate, Matt's had half a shandy and he's rat-arsed already. He's such a Cadbury drinker.
by Choda Boy 57 August 12, 2006
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