You used to steal it?!? It can't have been that hard if you were six!
Oh, I tell you, it was. I guess I was smarter as a kid than I am as an old-ish man now :-S
Oh, you didn't happen to do bizarre things because of it, did you?
Uhm, can’t remember anything extraordinary, except for the fact that my whole childhood was extraordinary—growing up as a pale sahib kid in Kerala, South India.
IMHO, it'd be intriguing to hear of your wierd and wonderful Codeine-fuelled stories! 
Mh, not really much to say except there was a lot of drug (ab)use later in my life <cough>. My late father was an M.D. and I grew up in the 60s in a family (and more globally: in a thought climate, in an era) where the use of substances for respectively against almost anything was considered legitimate. I am abhorred if only I think about how we used "Flit" (DDT) against every poor-ish insect (I must have inhaled LOTS of this poison), and how much Penicillin I *ate* against any inflammation.
But … the older I grow, the cleaner I get, with very few exceptions growing in my garden.