An extremely painful sensation on your balls that is caused by not so skin friendly cleansers.
You work hard all day in a particularly extraordinary laborious or dirty job. Your job causes you to get extremely dirty from materials which are persistently non water soluble such as roof tar, industrial glue or asphalt. You need extra help in the removal of these materials with known cleansers such as gasoline or Goo be Gone. While showering and pouring these materials on your naked parts... legs, arms, hands, etc...you accidentally drip some on your balls. The pain you feel is such that you consider dialing 911. It may last for more than 3 to 5 minutes before any slight relief may come from hosing down your balls with cold water and even vinegar if necessary. You are experiencing ACID BALLS!