your maths class was midway through and your blind teacher serena, was talking about algebra, and sure you could understand it but since your sleep schedule currently is terrible, you fall asleep. 23 minutes later the bell rings and all the other students and serena leave the room. 18 minutes later you hear cane tapping, and wake up to see serena coming back. she didnt know you fell asleep so she probably thought you left aswell, but she called out anyway serena: "hello? is anybody here? hello?"