the act of "muffing" (can be normal or pertain to a sexual act or her being a SMUT) it that is partook by a slutty (and or drunk) girl.
nick- "i saw you talking to that girl last night at the bar. how many hours did it take her to pronounce her first full sentence of the night? did you give her your cash and prizes by the end of the night?"
travis-"yea but she thought it was a good idea to try and blow me while she was taking off her panties. she got them stuck around her ankles fell forward, gagged on my cock vomited on the hardwood floor and slipped hit her head and didnt get up. she was there when i left this morning too i hope she isnt there when i get home."
Nick- "man she smuffed it so hard she may never recover hahaha"
travis-"yea but she thought it was a good idea to try and blow me while she was taking off her panties. she got them stuck around her ankles fell forward, gagged on my cock vomited on the hardwood floor and slipped hit her head and didnt get up. she was there when i left this morning too i hope she isnt there when i get home."
Nick- "man she smuffed it so hard she may never recover hahaha"
by ucsmut February 22, 2010
Get the smuffmug. Kate: Veal is good.... Oh... but I've never had it before...
Shilo: Smuff! (Very loudly, to make your point obvious)
Shilo: Smuff! (Very loudly, to make your point obvious)
by Kayla Pape October 15, 2003
Get the smuffmug. 
A highly intelligent human being that simply does not give a shit about the tasks at hand. Combination of the words "smart" and "sluff off".
Damn. Mike got a 1600 on his SATs and a 36 on his ACT. Instead of attending a top tier university like Duke or Harvard, Mike will be attending a community college 3 blocks from his house due to his 1.7 GPA. Mike's parents must be disappointed in their smuff off of a son.
by lsukev January 13, 2008
Get the smuff offmug. by ME November 27, 2003
Get the smuffmug. by Alteanprincess June 25, 2017
Get the smuffmug. Clive Palmer and Scott Morrison are smuffs
by LAWLORE February 22, 2022
Get the Smuffmug.