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adverb; when a boner (usually attained at night when you're about to sleep) feels as if its growing and gives a sort of pain. It doesn't help to masturbate, takes about 5 minutes to wear off. Not to be mistaken for sickle cell disease.
Ho:Wth is that?
You:Oh shit *pain* its a growing boner, get me some ice.
by DaBoneDoctor March 28, 2010