When you're penetrating someone anally and they fart, creating a muffler sound.
Brian "Did you go give it the chick you met at the bar last night"

Tony "Yeah, I gave it to her from behind. She even gave me a Boston Muffler. The vibration was amazing"
by ItsPseudo October 6, 2017
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A group of Boston Terriers that form a blanket as they lay across you whenever you sit or lay down.
Me: Hey, I am going to take a nap on the couch.

My mother in-law who owns 8 dogs: Okay hun, enjoy that Boston Blanket. I'll go turn on the fan.
by Domitri July 5, 2023
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A boy who help you believe that home is not just four walls and a roof…but a it’s someone with brown eyes and a amazing smile/laugh.
That one boy Boston makes me feel like home.
by Boy named Boston November 24, 2021
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An eclair is really just a boston cream pie in glizzy form
Yo dawg, pass me another Boston cream glizzy, I got a sweet tooth
by Harry Areola March 12, 2022
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Like a Boston Marriage, but much less platonic.
"Hey, is that your girlfriend?"
"We prefer the term Boston Roommates when we're in the Deep South."
by tenfourfuckbuddy December 9, 2018
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Either titty fucking a girl, or letting her straddle your cock - you ejaculate under her chin, letting the pool of semen spill down the side of her neck creating a bowtie effect.
by kramerkranzky February 19, 2016
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