Big ugly fat friend. Usually refers to a freind that makes you look a whole lot better in social situations.
I,m gonna go to the bar this weekend and bring my B.U.F.F. Jeff.
by Denny D. Bat April 13, 2006
Apparently no one knows the real meaning of buff.
by sammy1115 June 13, 2015
"Buff" means you're over 160+lbs who is cut and actually has muscle that shows. If you are under that weight and only have a six pack you are not qualified to be called buff. In fact you are skinny. So delete those pics of you lifting up your shirt.
Damn Jake is getting buff! Did you see his traps and triceps?! You can see them more defined! Unlike Esteban who is just skinny.
by iWearCutoffs December 27, 2014
The act of painting over or removing graffiti.
"The city's been buffing my tags and throwups!"
by Thoringerveer October 14, 2014
Big. Ugly. Fat. Fellow.

It is a term used by the USA military given to planes no longer in commission. These planes are used for scrape, going to be scraped,
being parted out, or in the process of being parted out.
Military Officer: Look at that buff, there is nothing left in the plane.
Recruit: Better take it to the scrape yard.
by Hair Cow Pie September 14, 2013
Sorta like the term D.U.F.F, meaning designated ugly fat friend, the word B.U.F.F means, black ugly fat friend.
Girl 1: Hey do you want to hang out later?
Girl 2: Yeah! Make sure you call Lisa, shes our B.U.F.F.
Girl 1: Oh, good call, I will see you girls later.
by Steet August 21, 2009
to dance or grind on a guy (or girl) at a party. you bend over and grind into a guy standing behind you at a party.
"girlll, i went to that party last night and i was buffin like theres no tomorrow!"

"son, i got so many buffs that night.. they should call me the buff king!!"

"taquisha did you see that white girl BUFFIN at yolanda party last night??".."yeah girl i seen it too!"
by buffqueenofthe561! October 10, 2009

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