Do any of you mummies/daddies ground your kids? And in what kind of ways?

I started getting grounded when I was in my early teens (12 onwards) only because I started getting rebellious then. I was not allowed to go out to meet friends and had to go home straight after school. It was horrible because back then, there was no cellphones and access to internet was scarce. When one got grounded, it was pretty much the end of the world :(