Legendary prankster Adam B hires a fake school teacher to prank his unsuspecting little brother in this hilarious viral video.

My wife’s sister “Lauren” is causing a riot over something our 7-year-old son, “Andy,” did because she has no sense of humor.

That should be all the information you need to solve for the On ___ (how some pranks are done) crossword clue! Be sure to check more clues on our Crossword Answers.