Risky business
You have to give it to these two twins. Not only were they trying to pull the old switcheroo like others on this list where one shows up in place of the other. These two were pulling the switcheroo in real time, in the classroom together. At any moment, the teacher could have spun around and caught them switching glasses or, better yet, switching actual seats. It was only by dumb luck that the one twin who needed glasses to see the board would get called on when he didn’t have them!