- The act of cleaning something until it shines. “The old man buffed little timmy’s badge”
- A term used in role playing games for attribute enhancing spells or chants. “lo m8 av u got da might buff. Ty m8”
- Someone who is very into something, possibly their job or hobby. “You’re such a computer buff, get a life”
- Being naked “Look daddy, that man’s in the buff!”
- To have removed graffiti (slag terms). “yo demz copz gone buffd my skillz! Biatches!”
There's many others too, check urbandictionary for more info.