A temporary condition of the male scrotum caused by a variety of conditions such as cold weather, swimming and other situations whereby the ball sack shrinks to a tight, leathery condition. The tightening results in sack giving the appearance of a beef jerky product.
Justin was outside in the cold working for serval hours. After coming inside and dropping his pants for a warm up hummer from his girlfriend, she pointed out to him that he has a severe case of the jerky sack, but blew him any way.
by Pierce Hyman June 04, 2009