Psychology

DT Tuyết was trying to make use of her psychology courses. She started her class by saying,
"Everyone who thinks they're stupid, stand up!"

After a few seconds, Bé Linda stood up. The DT said,
"Do you think you're stupid, Bé Linda?

Bé Linda replied,
"No, Dự Trưởng, but I hate to see you standing there all by yourself."