when a man poops on a girls stomach, then splooges on the mound of poop.
dude #1 - Hey did you give your girl a cleavland steam roller last night?
dude #2 - nah man, i gave her this new shit called the boston cream pie!
Get a Boston Cream Pie mug for your Uncle Trump.
(Also known as Boston Cream Cake and Banana Cream Pie) Boston Cream Pie is a phrase meant for declaring that you have been interrupted while telling a story. The relation between the food and the situation (although weak) is that someone was being interrupted by someone who wanted to talk about pie all the time.
"So anyways, I was went up to her and I-"
"Dude, hold on I need to take this call."

"And then I went back to my room so I could-"
"Would you like a refill of your Sprite sir?"

"Hey, wanna hear something funny?"
"I'm hungry, I'm gonna go grab some food."
"......I guess not..."

These are the situations in which the person interrupted should say:
"Boston Cream Pie"
by Scot Taylor January 24, 2008
Get a Boston Cream Pie mug for your bunkmate James.
a three way homosexual act involving at least one filthy irish guy who takes the cum of the first gentleman(often black) up his ass to have the 2nd one(often italian) eat it out of the irish guy's asshole
a black guy, and a filthy Irishman walk into an Italian restaurant and yelled "which one of you guinea bastards wants a boston cream pie for desert?", as he bent the irish guy over the bar and fucked him in the ass.
by BrafZachland May 13, 2016
Get a boston cream pie mug for your Facebook friend José.
When a man ejaculates and urinates inside a woman's vagina. Then she pushes it out into his mouth to eat.
I was so wasted last night I let my girlfriend give me a Boston cream pie.
by Iggy54 October 17, 2017
Get a Boston cream pie mug for your father-in-law Georges.
When 2 black guys have a threesome with someone and they double penetrate anally. The dick on top jizzes on the other dick while they're in the anus resulting in a boston cream pie.
When my homeboy and I were fucking his girl in the ass last night I gave him a Boston Cream Pie
by LillyJinx December 04, 2018
Get the Boston Cream Pie neck gaiter and mug.
The act of ejaculating in a particularly dark anus, generally stained with crusted feces. While the anal color may vary, the act is most often associated with a deep chocolate colored butthole.

Anal Creampie

Nutter Butter
Bro 1: Dude, I blew the hugest nut in Tiffany’s asshole this morning. I swear she never wipes her ass when she shits!

Bro 2: You gave your girl a Boston Cream Pie? Go clean the shit outta your dick hole. Nasty mother fucker.
by Mega Hemroids November 04, 2020
Get a Boston Cream Pie mug for your father-in-law Abdul.
When you nut inside a girls ass and then eat her ass out
I nutted in my cussion and went in for a Boston cream pie
by DLC aka daddy long cock November 05, 2020
Get a Boston cream pie mug for your cousin Jerry.