I did something similar but instead I would stall as much as possible and then only change once everybody was already done. Besides some obligatory comments from classmates on why I would just sit there it worked well. Teacher didn't even care that I almost always was late. Most boys in my class were eager to start throwing equipment at their heads anyways so I wasn't that late either
What was your funniest pre-cracking sign, if you had any?
I was just thinking back to when I was learning to femininize my voice because it would be funny if people thought I was a girl, but then never intended to reveal "what I really was", lol.
I'd love to hear all of your stories!