On the 1st of April every year, there is a day called April Fools Day. And at my school today we played a prank on my teacher.. xD. So yeah, Ha April Fools Day Lol. ;)
On april fools, when our teacher left the room for 2 mins, our whole class decided to just get up and leave half an hour before class ended. Our teacher has so little control over our class he just sat there saying "hey come back, class isn't over" but didn't do anything to stop us.