You have a teacher named Jiandra, Jiandra is your secret sex partner.

And now you are eating in class during Jiandra's lesson, but suddenly he walks towards your table coldly. then he snatches your snacks. Of course you're annoyed.

But without Jiandra knowing, you brought another snack and showed it mockingly to your friend behind the bench. and suddenly Jiandra grabbed the snack. making you snort in annoyance.