Definitions by mcnastyofficial

McNasty 

The act of taking two McDouble's, removing the top bun off of one, and the bottom bun off of the otherone, so that there is a 4 patty burger, and putting a McChicken patty between the 4 patties.

"Hey, lets go to McDonald's and make a McNasty"

McNasty by mcnastyofficial April 14, 2017