After falling off Tomos and breaking humerus bone, not being able to ride for 3 months or longer sucks.
So I want to warn everyone who's moped have drum brakes: after it rains, always ALWAYS make sure to start slow & gently apply brakes to scrape off all of the rust inside the drum before riding normally to avoid locking-up your wheel and falling off your bike.
Also, if you do fall, do not extend your arm, keep it inside close to your body. (edited)