A sexual grinding dance between two people or a group of people. Derived from the dance done by a naz. Assosciated with a person nicknamed or named or contains the word 'naz.'
"Damn did you see them two do tha nasty dance?"
"Yo Nigga'z Lets go do da nasty wiff dem girls ovr there"
"YO ITZ DA 'NAZ' HERSELFF, LETS GO DO DA NASTY WIFF HER"