by iohnoprngs March 22, 2009

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.
by Fisherella June 30, 2009

Jack muffed up Jason's face after Jason attempted to finger Jacks mothers asshole while she was sleeping.
by scott January 30, 2004

muffed up means fucked up. use "muff" to replace fuck. very fun to use so you dont get in trouble by the parentals or offend the old folks. use different variations of muff too-muffer, muffing, etc.
by Kyle Ernesti June 18, 2006

by Alex Hildenbrand May 06, 2010

Alexandra King: "Hey, Scottie! Raina's a muffed-up low-bag and you need to stay away from her! And she's going to be a meth-head and she's gonna get used by stupid guys!"
by Deviant and Shaven March 18, 2014

by Themuffreport February 10, 2019
