When I was 13 years old, I found a half-used popper bottle in my drawer. I figured it'd be fun to take it to school, so I put it in my blazer pocket (UK school uniform...sucked) and forgot about it. However, it was the day that my blazer was being washed, so my mum went through the pockets and found it. She called me downstairs, and I just strolled down not even thinking about it, and then it totally shocked me to see her holding it.
She said "What is this!?" and I said "It's a popper, mom..." and she went "Right then!" and stormed into the living room, blatantly to go on the laptop to look up information about them. When she couldn't find any decent negatives on Talk to Frank she came back and said "You know these are used by GAY PEOPLE!?" I had to stop myself from laughing before explaining that I wasn't gay. In the end I wasn't really punished, just no allowance for a week, which wasn't too bad.
I've never been caught doing weed as I'm always careful with that. Ever since I started smoking cigarettes though I've been caught four times, mainly because I've started to smoke them more and more often and just got more complacent about it. The first time my mum caught me she told me this was the worst thing I could of ever done to her and she started crying and shit :/ It sucked, but I didn't get punished. She kinda got immune to it the next three times I was caught, but the last time I got caught she said if I get caught again she'll kick me out, so I smoke cigarettes like a ninja now.
I can't believe how understanding most of your parents are! My mum is a total nazi in comparison.