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during rare and unusual pubatory activity, the testicles and the scrotum sack detach and shoot twoards neptune, thus being called in the medical profession, F.S.S. (Flying Scrotum Syndrome)

Also a popular Christian rock band
I was on a walk and balls detached, and flew away, and I said hey, that's one high flying scrotum.
by anonymous ball smacker March 20, 2003
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