Fake Workouts in Real Life: Sales Pitch

I had an idea for a comedic YouTube video in which larger kids would go to a public space like the mall, the school cafeteria, etc., and mime-act intense workouts while yelling, tensing, and flexing. For example, I would lie down on a table during lunch and pretend to do the bench press, and have my brother pretending to spot me, yelling in my ear all the profanities that an over-intense trainer would yell. I wasn't sure where to go with it, though. Considering it is a profane public disturbance, I'd probably only end up putting it on YouTube. My school's weekly video series is (supposed to be) very careful about being PC and reserved in terms of anything beyond characterizing broad cliques in school, but if this was done at school, I'd have to clear it with them, and it'd have to be held to the same standards as the video series, which means the idea is screwed at school, and if I did it at the mall, I could be arrested. I mean, that risk may be half the fun, since people would recognize how bizarre it is, but still, I need to think about how to work around that. But regardless, this is an idea in development for the future.