The designated smoker's areas outside of office buildings or in airports.
I hate walking by the leper colony in the morning...it stinks!
by Zenanarchy June 17, 2018
That group of kids everybody knew in high school that individually were often the targets of derision and/or physical violence, but who through some geek radar found one another to form an alliance, thereby lessening the probability that any one member is a victim.

The reference to the middle-age practice of isolating individuals with Hansen's Disease (Leprosy) and not allowing them to come into contact with any "normal" people is apropos because if a "normal" (read non-geekified) child were to associate with the leper colony, s/he is immediately labeled as suspect, and in extreme cases will be isolated him/her self, thus becoming a member of the colony.
Mark's sister: "Mark has been indoctrinated into the Leper Colony and is at the park LARPing."

Mark's mom: "NO GOD, NOOOOOOOO!"
by cowboythecat October 28, 2010