you and shawn were hanging out in your room, when out of nowhere it occurred to you to play music from a small cassette on which you had recorded songs.

the cassette had quiet songs, but you remembered that one was also from a friend of yours, so it had songs by her. for that reason, "...Baby One More Time" by Britney Spears started playing, and when it started playing, shawn couldn't resist laughing and starting to sing it in a strange way just to make you laugh.