Short for Nosey Ass Syndrome. Used to describe someone who cannot mind their own business. Always asking questions, listening in, or trying to know stuff that has nothing to do with them.
“Girl, worry about yourself, that NAS acting up again”
“Mind your business bro. That NAS got you doing too much”
“Mind your business bro. That NAS got you doing too much”
by Rynder September 10, 2025
Get the NASmug. by Small Change February 5, 2017
Get the Wha namug. 
by j4rün4 April 14, 2014
Get the jaa na bemug. A fucking Retard who goes around putting other people down by defining them on the internet. This uncommon act is called nesnassing ref nesnas
by YanZ April 1, 2004
Get the Nes nasmug.