look up any word, like donkey punch:
A group of Bieber loving ruffians who post pictures of Justin Bieber in various locations, usually only located by those in search of the Bieber bandits. Whilst they have never been seen due to their actions they have been described dressing as ninjas and working only at night, or in the early afternoon.
Carter: Hey look its a picture of Justin Bieber on the ceiling!
Adam: It must have been the Bieber Bandits!
Carter: We must catch the Bieber Bandits!
by NotTheBieberBandit October 29, 2010