Watch this hilarious video where students do naughty thing to fool their teacher, resulting in being smitten by their teacher.
If you go back to your school days, you may have done such mischievous thing to be saved from the shouting and beating of your parents.
But adding to much of 1’s in the answer paper and not checking thoroughly after committing mistake will land you in such problem.
https://www.youtube.com/watch?v=TcBgth9ph50
SmrutiRekha