To completely fail (brick) at something considered to be a basic skill - usually involving socializing of some sort.
I had an opportunity to score with two hot chicks tonight until I completely MNS'd it and wound up in the friend zone.
by Brandon "Sloe Vag" Geist May 08, 2008
A radio code used by some urban public safety agencies as a professional sounding abbreviation for coffee, milk, no sugar. Intended to make a coffee run sound official and important.
"East 2, return to quarters. Make a stop on the way, 3 MNS."
by Hot East January 05, 2010