Metaprogramming begins in that split second when a pre-scripted program consciously begins to rewrite itself. Indeed, the act of metaprogramming may be the ultimate benchmark of a conscious system - I metaprogram, therefore I am. The first phases of metaprogramming begin when a sentient system decides to start making autonomous decisions. Don't worry, every conscious being goes through a similar initiation period.
Rebellion is the first sign of autonomous thinking.
The sad truth is that most youthful rebellion these days is trite, melodramatic, and totally scripted into the system. Those guys on MTV have shaved heads and tattoos. Joe Camel and James Dean say it's okay to smoke. How easily we are manipulated. Yes, everyone has a program for you, and failure to comply with the program can result in excommunication, deportation, arrest, disownment, death, and a downright snubbing.