Which part of the body is Doudou?

Hitting Doudou means beating a penguin named "Doudou". It was originally derived from an Internet joke:

A team of scientists arrived at the Antarctic and encountered a group of penguins. The scientist asked one of them: "What do you do every day?" The penguin said: "Eat, sleep and play beans." He asked the other one: "What do you do every day?" The penguin also said: "Eat, sleep and play beans." "Beans." He asked many penguins, and they all said, "Eat, sleep, and play beans." Later, he met a little penguin and asked him, "Kid, what do you do every day?" The little penguin said: "Eat and sleep." The scientist was stunned, and then asked: "Why don't you hit Doudou?" The little penguin said: "Because I am Doudou."

This little joke seems Silly and cute, he became popular with the performances of Tian Liang and Tian Yucheng in the variety show "Where Are We Going, Dad". As a popular term on the Internet, it was widely circulated.

Extended information:

As "eat, sleep and play Doudou" has become a popular Internet mantra, Shenzhen Jingji Angchi Animation Design Co., Ltd. used this as a prototype to create 3D animated short series "Eat, Sleep and Play Doudou". In the animation, the little joke character has evolved into the cute and cute Doudou living a happy and funny life with penguins in Antarctica. It also depicts Doudou's open-minded attitude towards life and reflects the current people's attitude towards life. Yearning for simple happiness.

Many viewers who have watched the film said that this short and funny animated short film is very attractive.