I'm tired

Literally. Gosh, what kind of ridiculous break is this? And Mr Lau is constantly pressurizing us to study study study study.
Just now before going home, he called me over and we had a random conversation. Shall type it out.

Scene: School concourse, YJ on the phone with mom. Mr Lau supposedly consulting his students who were around him.
Mr Lau: Eh Yun Jia, don't socialize lah.
YJ: Errr. With my mom?
Mr Lau: *speechless* So school ended?
YJ: Yeap.
Mr Lau: Where are you going?
YJ: Home lo.
Mr Lau: Do what?
YJ: Sleep.
Mr Lau: huuuuuuuuh! Why sleep!!! Then you won't have time to study lei! Why don't you just get a cup of coffee and practice math?
YJ: But I'm really sleepy! And I hate coffee.
Mr Lau: Then drink coke lo! Got caffeine.
Random student A: Tea also.
YJ: aiya! But if i'm tired, nothing gets into my brain. So why do i study? xD
Students around: whooooooooooa.

Moral of the story: You can't study if you're tired. No use forcing yourself. The end.