The sexual act of shoving one's scrotum into a partner's vagina.
See that British girl? I bet she wants a Boston Harbor.
When you cum in a someone's ass or vagina and then you diarrhea shit on their pubic bone creating a cream filling and a chocolate coating similar to a Boston Cream donut
"Yo, your mom is an absolute freak, she let me give her the good ol Boston Cream last night 😏”
A Boston cream is when an individual consumes an entire pack of Oreos the night before having sex. He then shits in his hand, and smears it on the lady's fupa In a cake decoration type way, and proceeds to give her a creampie.
My date looked like she loved doughnuts, so I gave her a Boston cream.
When you nut in her butt then lick it out
Hey girl can I get a Boston cream
When you use a doughnut hole to jerk off
“I don’t fleshlight’s know just go for the Boston cream.”
When you're in Boston and another person creams on your face
"Dude I was in Boston last night and this guy totally came on my face"
"Omg...... you got Boston creamed"
When a guy ejaculates in a woman's vagina and he then eats the seamen
Babe fill me!
Now eat it like a Boston cream!