You might be a mall ninja if..... you think .357 SIG is the one, true caliber. (right Weer'd?)
You are definitely a mall ninja if you wear tactical underwear. ;)
The obvious question then is, are you a mall ninja if you don't wear pants?
I'm guessing that even without tactical pants you could still be a mall ninja if you're decked out in a tactical jacket, tactical underwear, rails, and most importantly, tactical Starbucks.