There's a staff bathroom at my work, and it has a motion sensor light. Usually when I go in there it's dark, because it's been vacant and sans motion for however long they have the light timer set.
Anyway, what I like to do is enter the bathroom and do a quick karate move, either a front jab, uppercut, or perhaps a high kick, and then pretend "my moves" are what triggers the light to turn on, not just me entering.
So I did this just now: I opened the bathroom door, walked in, saw it was dark, and then did a kind of roundhouse move as the light flickered on. Now I've never taken karate, but I'm going to go ahead and toot my own horn and say it was a pretty good roundhouse. I was even a little out of breath afterwards. And that's when I turned and saw a faculty member standing at the entrance, holding the bathroom door open, and just staring at me. He must have been a few steps behind, now waiting to enter the bathroom, but obviously stopping due to a new staff member, me, doing a karate kick in front of him. So I just smiled, did another stretch, as if this was nothing out of the ordinary, and I headed to a urinal.
I couldn't see the faculty member anymore, but I heard him go into a stall and shut the door behind him. I'm not sure of it, but I'm pretty confident I heard him giggle.
So here's my lesson: If you're going to do a karate move in an unconventional place, either do it alone or be prepared for people to laugh, with or with out you.