A concreters smile occurs when an individual exposes the top most part of their buttocks to another presumably unsuspecting person within eye view. This has also been called a plumbers crack, or a partial mooning.
"So Billy-bob when down to pick up his burrito and next thing you know he was giving me concreters smile!"
by Dremond Green August 12, 2018
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Get the smiling upon approach mug.Another name for the Penis, referring to the upward curve the genital sometimes possesses, and the joy it brings the one who yields it.
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