Everyone I know calls me "you freaking unbearable idiot we told you not to come back here!!!" so I came to understand that's just how people say "Hi!" :D
In all seriousness, I'm one of those people who always got friendly nicknamed, something I have always appreciated, yet it's always a different nickname everywhere!! I currently have, of the top of my mind, 10 different simultaneous nicknames at least. That switching when talking to each group always tickles a part of my brain :)