Well, back when I used to live with my parents I did smoke/vape in the house on without them knowing. At the time I was doing this my parents had never talked about marijuana with me, so I was completely unaware of what my parents' stance was about drug use. I knew that my father had used any substance he could get his hands on before he got sent to rehab, but I had no clue what viewpoint he had about my personal usage of drugs.
I hid my indoor vaping from my parents for 8 months, and they never found out that I did it in the house. They eventually found out about my indulgence after I came home from a party reeking of smoke, and my father went on to tell me that if I kept smoking weed I would end up a friendless low-life and in rehab. 3 weeks after he told told me this I caught him in our basement smoking a joint. He had been keeping his smoking a secret from our whole family, including my mother, for approximately 12 years (ever since he got out of rehab).
Telling this little backstory may have been somewhat unnecessary and lengthy, but I felt I needed to tell it just to illustrate the lack of respect there was in my family in particular. When I was vaping in secret at home it wasn't meant to be an act of disrespect. It also wasn't about disrespect when my father was keeping his smoking a secret. But when my mother eventually found out about my father's usage she was heartbroken and felt completely betrayed. But what struck me was how she seemed most offended by the fact that he was smoking in the house.
The question that opened this thread is a very difficult one to answer for me. I want to say it's ok because I did it, and because I was so good at hiding it I never ended up hurting anyone. But I also know that if I was ever caught my mother would have felt betrayed and disrespected. I value honesty, so my conclusion is that in most cases it is most definitely not right to disrespect one's parents in such a blatant way. If there is any way of getting out of the house and partaking it would be ideal, but sometimes that opportunity doesn't present itself. In that case, either don't do it or just hide it really fucking well. lol
On another note, one thing I've thought about for a while is if it was okay that my father was smoking in the house and keeping it a secret from the whole family? Is it just as wrong as what I was doing, or does the family hierarchy make a difference? Is lying better when a certain person does it simply because they're the "man of the family"? Or is lying about it just plain wrong?