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?!
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.
Eating boston clam chowder out of a womans pussy when she is on her rag.
Eat all your boston clam chowder little jimmy.
The boston clam chowder