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To urinate in a shower, while its running or not, directly into the drain without any splashage or spillage onto the rest of the shower basin/tub and/or shower walls.
Being concerned over the health and safety of his roommates, B-Rad decided to straight-drain instead of go free willy.

Matthew was too drunk to perform a straight-drain so we made him go outside.
by dferbs November 30, 2011