Stands for "Not Gonna Say No...". It is used as a reply when you are asked to do something, and its something you want to do. A clever way of saying yes.
Allison: "Hey do you wanna go out tonight for some drinks?"
Me: "I'm Not Gonna Say No..."
Via Text/Twitter:
Original Text: "Would you hook up with him?"
Reply: #ngsn
Me: "I'm Not Gonna Say No..."
Via Text/Twitter:
Original Text: "Would you hook up with him?"
Reply: #ngsn
by Bertesacker February 27, 2014