Yeah, kiss my ass under the mistletoe
He’s reffering to a mistletoe during Christmas-time. Whenever two people are under a mistletoe it is said that they have to kiss each other. In other words, he is joking around.
To help improve the meaning of these lyrics, visit "Finito" by N.O.R.E. (Ft. Lil Wayne & Pharrell Williams) Lyrics and leave a comment on the lyrics box