While it's offensive, you won't wind up in jail.
So you're a little shy. Normally that wouldn't really be a problem, but if you want to be an accomplished flasher, you might have to work on that. You can start with the Imperial Motion Men's Progress Full-Zip Hooded Sweatshirt. Waist-up flashing might be what you need to get you headed down the path to infamy. It's also a lot less risky.