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Balls that steam.
There are two cases of Ballsteam, one being more severe than the other.

1.When your sitting on the toilet, and the heat from your scrotum mixes with the moisture of the toilet water. This phenomenon usually occurs when taking a shit after working out.

2. Some people are born with ball's that steam constantly throughout the day. It's hereditary.
by jrekd March 08, 2010