So today is March 11th, which is otherwise known as 3-11 day to fans of the group 311! and if you one of tho lucky few that are going to the 3-11 show in New Orleans have fun!
i heard that it's some local police code from their hometown. but my favorite theory behind 3-11 is that they're part of the KKK.
The 11th letter of the alphabet is K, so 3-K's is KKK.