Munjo
Translates to lightning from Serbian (pronounced moon-yo). A nickname for your best friend, usually someone that is very energetic and cool. Not to be confused with Mujo, which is a slur towards Bosnians.
Person 1: "Hey look, it's our boy Munjo!"
Person 2: "It is, look at him he is so cool!"
Person 2: "It is, look at him he is so cool!"