Meffing 

a short form of, or rather, more polite way in saying mother-fucking. Derived from effing which means fucking by adding a 'M' in front of the word. Hence 'M-effing'

I've got three more meffing years til college ends!

Meffing by LG Godwin November 2, 2008

Meffing 

When one human consumes methamphetamine and starts flailing. Or acting like an asshole. Usually done out of public site.

Hey kids quit meffing around.

Sarah told me ,Dustin just won't stop meffing with everyone.

Sarah told Kyle about Dustin meffing with people. Dustin told everyone a different state when asked where he was moving. Jackson said he wasnt meffing with him anymore though.

Meffing by Rochester2018washell666 February 4, 2019

free muffing 

When a woman goes without underwear - the female equivalent of free balling. Also called free buffing or going commando.

Half way through dinner, Jennifer told me she was free muffing and I couldn't get my mind back off of tagging her for the rest of the meal.

free muffing by Gettn N Eiffel February 8, 2008

muffing 

a sexual act that may or may not be popular with trans women, according to Miranda Bellweather in Fucking Trans Women #0 muffing is the sexual act of penetrating one or both of the inguinal canals.

I LOVED muffing her last night

muffing by censation December 15, 2010

muffingasm 

The orgasm of the mouth when coming in contact with Entenmann's Mini Muffins.

Andre: Dude, these Mini Muffins are so good...
Mark: Oh my god dude, I'm having a muffingasm right now...OHHHHHHHHHH YESSSSSSS! YES! MUFFINGASM!!!

muffingasm by Andre & Mark September 29, 2005

Muffing 

When you get up in the morning and your eyes are crusted shut and you know you should not go on your phone but you do it anyway.

Dude, why are you muffing at 6:00 clock in the morning.

Muffing by One off handle June 9, 2020

finger muffing

giving your friend a sneak attack with your index and middle finger up his bum hole

luke likes when it is finger muffing time

Jake: ah shit he just fingermuffed my asshole

Luke: Oh ya i did smell my fingers

finger muffing by perry for president October 22, 2009