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Alternative reference for 'testicles and scrotum', most often mentioned after a man gets out of a long, hot, steamy shower. After extended exposure to high heat and humidity the ball sac gets loose, resembling chewed bubble gum that has been stretched out and covered in pubes.
After his time in the sauna, Larry's hairy gumbers were slapping the inside of his knees.
by the_fatrix69 July 06, 2010