Or do like me and my brother and pretend that the elevator is the belly of a great and mighty dragon. Pretend to slay it. Make sure there are elderly people in the elevator because they are the most judgmental.

Add one, hold elevator, say sorry when the person doesn't get on.

 Go to step on and pull your foot back sharply and say clearly "Nope, I made that mistake before" just as the doors close.

or if you have a briefcase open it every so often and say "do you have enough air"

or stand in the way of the door start to open a briefcase and say... so lets play a little game shall we?

Gentlemen draw circles, assholes draw squares. Elevator etiquette, super simple stuff

 This is so funny + some of the ideas in the comments... i haven't laughed this much in a while :)) really cool lmao :))

 i like the standing in a corner facing the wall. somehow i could see that creeping some people out

 stand in the corner of the elevator and whisper shut up there going to hear you

say "open sesame", jst b4 the door opens.