Kids are resourceful and can dedicate a lot of time to defying their parents if they want to.
That said:
even then they're going to see it at friends' houses because of lazy garbage parents of other kids.
Part of knowing who a kid's friends are is knowing who their friends parents are, and getting to know them, too. It's part of being in a community. I certainly got the "I don't want you hanging out with X" growing up, and I remember scoffing over it at the time (and doing what I can to circumvent it), but as I got older I only then was able to appreciate this and, looking back, yeah, X got me into a lot of evil stuff that started out as "only" schoolboy hijinks.
Kids are resourceful and can dedicate a lot of time to defying their parents if they want to.
That said:
Part of knowing who a kid's friends are is knowing who their friends parents are, and getting to know them, too. It's part of being in a community. I certainly got the "I don't want you hanging out with X" growing up, and I remember scoffing over it at the time (and doing what I can to circumvent it), but as I got older I only then was able to appreciate this and, looking back, yeah, X got me into a lot of evil stuff that started out as "only" schoolboy hijinks.