Short for 'Meet and Greet'. Mostly used in fandoms, such as Directioners and Beliebers.
"Can't wait for the m&g tonight! See ya later-xx Niall"
by tlicious June 16, 2013
Meet and Greet; a get-together before or after a concert with either the artist, or with other fans or friends.
The M & G before the concert was great; Josh dropped by!
by Kourtnee March 12, 2004