This morning some of my students almost pushed my tolerance levels to the limit!
In my classes I usually count my students in to start them off and expect them to be ready. Some students in my class thought it'd be funny to pretend to get ready to play and then when it was time to play they'd just play nothing! They kept doing it despite me telling them not to, that I almost got to the point where I was going to end class early and tell them to go home.
Instead, I gave them a worksheet to do and that shut them up for half an hour!