drain the main vein
(vulgar, _, slang, of men) To urinate.
Definitions
(vulgar, _, slang, of men) To urinate.
I got to drain the main vein, kiddo, so you just stay put.
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🗺️About Regional & Other slang
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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(slang, of men) To urinate.
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(idiomatic, vulgar, slang, of men) To urinate.
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A vulgar, idiomatic male euphemism for urinating. The 'snake' is slang for the penis; 'draining' it follows the same logic as 'draining the main vein' or similar expressions. Used in casual speech among people comfortable with this kind of bodily humor.