Top Definition
Performing cunnilingus on a woman after ejaculating into her vagina.
Rob came inside her, but since she wasn't done, he got down and enjoyed some Boston Clam Chowder.
by CBK2k7 January 12, 2007

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the term comes from the act of queefing while going through the menstrual cycle.
man i just boston clam chowdered all over my undies, someone got a tampon?!
by katelin/becky April 25, 2005

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