When you fail so bad you could die sitting in your own muffins. Also refering to failing less than fail muffin. Look up fail cake.
by fat weiner yayayayayayayaya May 22, 2011

Is generally reffering to someone with a dirty pedro. This person would be related or called by a female or relationship figure. To be someones bear for instance,In this case a fuz muffin would be a male with a sanchez, pedro, or just plain hairy facial features during the act of loveable mention towards a boyfriend.
by MyMomHatesMe January 29, 2010

the act of crushing (putting all your weight on) a woman's vagina during sexual intercourse (usually applicable to an obese male)
"So, Sheila...How was it last night?"
"It was so horrible, he was a total Muffin Crusher!!"
"Damn Girl! How's your Muffin' feel right now?"
"Totally Muffin Crushed"
"It was so horrible, he was a total Muffin Crusher!!"
"Damn Girl! How's your Muffin' feel right now?"
"Totally Muffin Crushed"
by Poppadomman December 15, 2013

Muffin Smusher, or "Muff Smusher" for short is another word used we use your manhood, or to describe a male slut.
Jimmy took a ball right in the muffin smusher
or
Jimmy gets a ton of chicks, he is a real muffin smusher
or
Jimmy gets a ton of chicks, he is a real muffin smusher
by Donl;asDonny September 5, 2018

Something a little greasy like a pastry, but sleazy like the IT guy peepin some cleavage while he uselessly double clicks your mouse.
by Amylaura September 9, 2020

by PhonicEmu54321 September 24, 2017

by El_choco14 August 13, 2018
