Massachusetts Clam Chowder Share definition Flag The act of saving your cum, pouring it into your partner's vagina. Putting oyster crackers and eating it with a spoon. "Ah man! My boyfriend gave me a Massachusetts Clam Chowder last night!" Massachusetts Clam Chowder by TheChowderExpert March 11, 2015 Get the Massachusetts Clam Chowder mug.