The urge that comes around 1 AM to eat large amounts of snack food
John was pulling an all-nighter in WoW when he got the midnight munchies and grabbed a huge bag of Cheetos
March 8, 2010 Urban Word of the Day
The emptiness you feel in your stomach in the middle of the night, usually while watching commercials for pizza or Burger King.
Guy #1: Hey what did you do last night?
Guy #2: Ughh man, I was watching this movie on TV, and then a Burger King commercial came on for the Whopper JR. I realized I totally had the midnight munchies and I just had to get 50 of them things.