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A rack in ruit. When only four cups are left you can ask for a normal or a loose vagina. The loose vagina is the machunk. It’s like getting the last hit of a bad drug.
"I asked for a machunk and got a sideways diamond. I was so high I didn’t care."
"He said he wanted a machunk because he had a date and needed to look cool."
"She got a machunk and said it was the best rack she ever had. Probably because she was drunk."