"If you ride a dog, you won't be afraid of your crotch being rotten" is a folk saying. This sentence means that the elderly want their children not to have too much contact with dogs, otherwise it will easily cause health problems.

Dogs have a lot of bacteria on their bodies, among which lice and fleas are the most common. When people and dogs, especially children These bacteria and parasites may be transferred to people who have close contact with dogs, such as riding on their backs, especially children wearing crotchless pants, causing skin infections, inflammation and even ulcers.