drain the main vein

(redirected from drain my main vein)

drain the main vein

vulgar slang Of a male, to urinate. "Main vein" is slang for the penis. Will you order us another round of drinks? I'm just going to go drain the main vein real quick.
See also: drain, main
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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