Just for fun,what is the best technique to cheat in an exam?

i'm a teacher and there is no best technique to cheat in an exam. when i was a student, i cheated too but writing the answers and hiding them took longer than studying. anyway, in the subjects i teach i actually encourage cheating. because i teach filmmaking. in fact, the student who cheats and still can't make a better film than the student he/she is cheating from is the one who deserves a low grade.

I have cheated once in a test in schooland I wrote in my arms with a jacket covering it however I have never looked even once at the answers written in my arms as I was so afraid to be caught up. And when I got home I felt so ashamed of myself and decided to never do it again in my life and even if I had written the answers they were not fit in the questions so it was good I did not look at it.