A slang term used to define women's breasts. Usually big ones which stand out and grab the attention of all guys as if they were checking out other guy's packages in a locker room.
Emily: "I'm going to punch you in your up-nuts."
Ashley: "Go ahead, they're still bigger than yours."
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug