| 1. | Half-On | ||
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A semi-erect penis. (See: Semi, Chub) Fifty percent of a Hard-On. A "bulge in the pants," as it were. I often get a half-on while leering at females on the subway.
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| 2. | Half-on | ||
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When a mans dick gets bigger but not hard enough yet to not be bendable either with starting to get a boner or starting to go down. Damn that guy has a huge dick
Nah he just has a half-on |
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