the teachers head explodes into red marbles and a daruma doll jumps onto the teachers desk

Doll: hello students! Why don’t we play a game? There is a button on my back, if you press it then I’ll let you go but if i see you moving then you’ll end up as your teacher. If no one presses the button in one minute then all of you will explode into little red marbles and the only person who will survive will be the persin who pressed the button