Top Definition
When a guy is getting sucked off, yet before he's about to cum, he pulls out and knocks out his/her partner w/any type of blow to the face. He then opens his partner's mouth, which then allows him to take a shit in it and giz right on top.
I gave my friend's mother a Boston Creme Pie last night and she's still cumming back for more dessert.
by Jacob Giese April 12, 2007
5 Words related to A Boston Creme Pie

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