Stealing someone's lunch at work is one of the most obvious signs that some people really do never grow out of middle school behavior. Thankfully, this employee, who also happened to be a former chef, knew how to get even with the problematic coworker in his place of work. First of all, the former chef was, unfortunately, an easy target for the lunch thief, considering how elaborate and over-the-top their lunches tended to be. However, despite valid suspicions, the employee still had no officia…