Top definition
When the toilet plugs during a courtesy flush of poo and the water level rises to contact your scrotum. This gives you an early warning and a chance to prevent a disastrous overflow. The scrotum should be cleaned thoroughly after activation.
Dude, what happened in there we are going to be late!

Sorry man but my scrotalarm went off during a courtesy flush. I had to plunge and get a shower to reset and clean the alarm point. SOP, Standard Operating Procedure.
by rcbadger May 21, 2013
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