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Testicles, especially when receiving oral sex.
My chin bumpers were sore after the bitch gave me head for an hour
by djslut September 20, 2005
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The nuts that swing low when letting someone smoke your bologna. Usually on a warm day when the baby makers are hanging long.
John does not like fish. John would rather have an order of chin bumpers with a side of cock sauce.
by mark sil March 01, 2006
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