Mark, who lives with his mom and his older sister.

You come home from a long day of school. It's a friday, but as usual you don't have any plans. You'll probably do some homework, play some video games, and crash. Unfortunately, your older sister, Amanda, is having a sleepover tonight. Your mom is out of town, so you know that they'll be loud all night and probably keep disturbing you. As long as you stay locked in your room though, it shouldn't be too big a deal.