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2.
Cumming into a paper bag and then placing it over a female partners head, then lighting said bag on fire.
"I got the Biz Nasty!"

"Yeah, it's in your hair."
by FuckMuncher12312312 December 29, 2012
 
1.
1. Used to describe someone wearing formal business attire with a hint of awesomeness.

2. Used to describe an outfit that is simply awesome. It is much better than swag.
1. "That Spanish teacher is looking pretty biz-nasty today."

2. "Your suit is classy and awesome. I'd even say... it's biz-nasty."
by Gustavo White November 13, 2013
 
3.
hurting; beating someone up, or having really good sex
i gave that boy the biznasty.
me and your gurl did the biznasty.
by lp miramontes October 01, 2003