Ventilation passing between the scrotum and leg or perineum, or taint. A lack of sackair leads to severe discomfort between the legs (of a male). Infant males tend to run naked around the home to enjoy extra sackair, well the bigger males tend to do the same as well.
I've been driving for hours! Man I need some sackair!
by Lesliegirl June 24, 2007
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