Boston Clam Chowder Share definition Flag 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. Boston Clam Chowder by CBK2k7 December 10, 2008 0 0 Get merch Get the Boston Clam Chowder mug. Buy Now — $32.95 See more merch