Said in accordance with complete and utter failure.
'Well you see what I was trying to..' 'Ya muffed it.'
The female equivalent to shirt-cocking, where a woman wears only a sweater, often post-coitus, but nothing else. Unlike "shirt-muffing" where the female subject may intend to dress provocatively in order arouse men, a sweater-muffing individual hopes no one will see her and uses only a sweater usually because it is easier than putting on normal clothes or because she is cold.
Sweater-muffing is common when performing quick rudimentary tasks after intercourse such as running to the kitchen to get some juice or checking one's email.
Charlie: I just saw our neighbour sweater-muffing it in the kitchen.
Jon: Wow at 3pm?
Charlie: Yeah, she was getting some juice.
Jon: You need a job dude.
a slutty bitch that skeezes on other peoples men.
That slut-a-muf stole my man and now im'o push her head through a wall
phrase referring to fucking up sex by not shaving your muff
We was about to hit it right, but i reached in, felt that bush and though "damn, this bitch muffed up." She knew she muffed up too.
Verb "Muffed"
"Man, I face planted and ate carpet, I was so muffed."
When a lady doesn't shave her private parts for a few months and then rides the males face