The term "buttmuffin" is an affectionate term, a term of endearment, used to describe a person with a nice ass (usually a female) – the "butt" referring to ass, of course, and the "muffin" being a reference to a soft, sweet, sponge cake.
The term "buttmuffin" may also be used to describe a person with a particular fondness for nice, or "sweet", asses; however, the term is not descriptive of faeces, in any way.
Suki said, "hey, buttmuffin", to Mikayla, as she walked into the room, and gave her sweet ass a lil squeeze.
(n) An idiot or stupid person.
Oh you buttmuffin! Why'd you do that?
It's when you have a little but of poop sticking out of your anus and you can't quite get the whole turd out so you have to pinch it off and then it looks like a ball type thing or a puff pastry, or rather a muffin.
I tried to take a shit yesterday and I couldn't get the turd out, there was a little inside of my anus for like five min; man that buttmuffin was a tough one!
An assloaf.
I dropped a couple of buttmuffins in the toilet just now.
A steaming fresh poop, big and smelly.
I'm baking a hot, fresh buttmuffin for you as we speak
Cakes that appear on your butt.
Oi, that girl has buttmuffins, she has cakes on her ass
Similar to a "shart"
It is the attempt to fart, but have a solid poop squish in your undies instead.
I was really gassy today but had to run home because I dropped a "buttmuffin"