Slang in the Wexford area north of Pittsburgh for staying up til dawn drinking because your friends are pussies and fell asleep at 4 o'clock. On-Demand must be involved for it to truly be "a Nico"
He did a Nico and stayed up til 9 drinking my dad's port wine with Sean and watching movies On-Demand.
by S.H.L.F. April 26, 2005