My best friend refers to his room as his cave, as do his parents, so when I'm over and we're about to delve into hours of computer time we announce that we're going to go hide in his cave.
Lol. Anyway, another thing that was absolutely crazy pissing me off, was when we first got our family iMac. We turned it on, and it asked us to create a password for an iTunes account. Shortly after that we were asked to create a password to login with. My dad starts getting upset, saying "I don't want things getting fouled up with too many passwords to remember! Why do we even need the second password! This is ridiculous! Why are there so many damn passwords, we have enough trouble as is remembering passwords!". Well dad, maybe that's a problem for you, but it's not for me. And it's not for my mom. Not to mention there's a very good reason to have both of those passwords, and even after I explained why both those passwords are necessary he still didn't really get it.
Speaking of the iMac, my parents used to get soooooo uber pissed if I used their computer to play games (since my laptop is too old to handle even minecraft). They don't want me hosting an MC server for a few friends, they don't want me playing any games for more than an hour, and it's stupid. They don't even know why it's "bad", because it isn't bad. They don't understand that there is nothing dangerous, or hindering to the computer when doing any of those things. Besides, they hardly ever use the damn thing, so I'm really the only one in the family who makes good use of the 1200 some-odd bucks they shelled out on it.
Sorry for the wall of text, had to vent that. No tl;dr, just read.