Watch a doctor use Play-Doh to show her son how to do a C-section

• Jessica So, a dermatologist, posted a video of herself and her son performing a C-section on an abdomen made of Play-Doh.
• The video has more than 4 million views on Twitter.
• So and her son have performed other Play-Doh surgeries together too.

A mom who is also a doctor took the internet by storm when she posted a video of her son conducting a C-section on a Play-Doh stomach, before successfully delivering a baby Spiderman.

Dr. Jessica So, a California dermatologist, created a relatively anatomically-correct abdomen to help her son understand how babies are delivered via C-section. She then performed a mock C-section with her son, which she documented in a short YouTube video.

It was a way of celebrating her son's fourth birthday.

"Our little guy just had a birthday (the big 4!)," she wrote in a description of the video, "and we reminisced about the eventful, unexpected day he arrived and the flurry of amazing people involved with getting him here safely."

This isn't the first time that So and her son have performed Play-Doh surgery together. The duo started doing play surgery last year, when So's son expressed interest in becoming a surgeon.

"I suspect some of his interest stems from a natural curiosity for my work as a physician, while I am away from the home all day," So told HuffPost Canada. "While we do talk about the different medical problems I treat, most of these conversations occur as part of a larger ongoing discussion about the calling of a physician - the joys, sorrows, and sacred honor of being entrusted to care for others."

For her son - and viewers - it's also entertaining. Their first surgery together was a cholecystectomy, the removal of the gallbladder. So's son liked it so much that he wanted to remove the organ not once, but five times. Since then, So and her son have done a Play-Doh hernia repair, a whipple surgery on a pancreas, a nail biopsy, and more.

Although some internet commenters thought that performing surgery - even on Play-Doh - was inappropriate for a four-year-old, So says that many people have been enthusiastic about her unique approach to teaching her son.

"My favorite are those from parents and educators of children with similar interests in the human body, who have been inspired at an early age to pursue a career in medicine, or to work even harder in their studies to reach their goals," So told HuffPost.