What are the least important laws/easiest to break in Tokyo?

Hey, looking to have fun in Tokyo in a few days, what are some easy laws to break while I’m there? I’ll probably litter and be obnoxious, but I’m wondering if there’s anything more interesting I can try.

PS I had my previous post removed, so in case any mods are wondering, I’m not being racist sexist homophobic or bigoted, I just want to have fun in Japan and there’s nothing fun there legally