Without fail the class would end a few minutes early. As soon as I started making the sounds it was like dominoes. Ten minutes left in the lecture but everyone has all their stuff put away and are putting their coats on. I think of this often. May this knowledge set you free a few minutes early.
Lmao, this happened in High School and the teachers were like: “Why are you all packing up? Class is not over” then when the bell rings: “tHe bELl doESn’t diSmISS yOu, i dO!”