Answer:
Because they just want to talk all the time...
Explanation:
I say this because My mom used to be a teacher and she said she just wanted to talk to the students and make sure that they understand a lesson, or you could be using the bathroom and every time your class goes to the bathroom they always say, ''don't take long'' or ''don't be in the bathroom for long'' they say this because they want you guys to get to class and get started on whatever ya'll are doing :)
