Large and slightly saggy breast. Used when sublty comparing person to a cow.
She had nasty milk sacks.
Look at the milk sacks on that whore.
by Sarah Setzer September 12, 2006
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That ho has a beefy set of milk sacks!
by Anonymous September 1, 2003
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Me and Jim hit the "Milk Sack Shack" last night.
by ClassyApple March 1, 2014
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