Minho and Jisung are best friends. Jisung is 15, and Minho is 17. They're both still in highschool.
Jisung's parents are very religious, and he has an older brother, while Minho's parents are a bit more loose, and he's a single child.
They're always caught in rather compromising positions. They're not dating. They're just best friends. Yet, every time someone falls on the other, or they're teasing each other in a dirty way, either their parents walk in, or Jisung's brother does.
As for now, Jisung and Minho were laughing and playing in Jisung's room when Jisung fell on his knees, and when he tried to get up, his hair was stuck in Minho's belt, which, of course, made it look like Jisung was sucking Minho off. And of course, at that moment, Jisung's mom enters.