Oh, and Charlie's now on a first-name basis with his advanced English teacher, Bill. This is so Dead Poets Society.
Bill can tell that Charlie has a knack for the whole reading thing, so he gives Charlie another book to read. But Charlie doesn't tell us what it is. Boo.
Now Charlie tells us a story about his sister.
She has a boyfriend, whom Charlie doesn't give a name. (Get used to it.)
This boy gave Charlie's sister a mix tape called Autumn Leaves.
Quick cultural snack: For all you digital-era peeps, a cassette is a plastic thing with tape in it, like a movie reel for sound, which plays music. (For all your cassette-era peeps, we're sorry we had to describe that.) A mix tape is like an MP3 playlist, playing whichever songs you choose in whatever order you want.
Okay, back to the story.
Charlie's sister didn't want it, so she gave it to him. And sure enough, when Charlie listened to it, he fell in love with the song "Asleep" by The Smiths.
Fast forward to a night when Charlie, his sister, and her boyfriend are watching a movie.
Um, well, at least Charlie was watching a movie. His sister was otherwise engaged—you know, berating her boyfriend for not standing up to his bully when he was fifteen.
The boyfriend starts to cry. Awkward.
Trying to make her point, Charlie's sister uses Charlie as an example. "Even Charlie stood up to his bully" (1.4.12).
Totally fed up, the boyfriend hits Charlie's sister. (This just got dark really fast.)
She doesn't tell anyone. In fact, she starts spending more time with him.
Even Charlie rationalizes the boy's behavior: "I guess he stood up to his bully" (1.4.15). Well, that's one (really twisted) way of looking at it.
Later that weekend, Charlie walks in on his sister and the boy having sex in the basement. Blah.