70-year-old YouTube Hit...
a swimming pool like a kid. It was a big hit among young South Koreans: less than six months later, Park has about 400,000 followers on YouTube and Instagram.
Since then, everything has "flipped like a pancake," Park quips.
"I learned then that my grandmother was just like us. She likes to travel, eat tasty food and take pretty photos," said Kim, who films and edits the videos.
"I'm her fan too. She is such a cool person."
Her fans love Park's unfiltered comments in her local dialect, such as a remark about Korean soap operas — "those things get pregnant days and nights."
Park's unabashed willingness to share her story and emotions, and her lack of shame over her poor education, appeal to young South Koreans.
"The reason she is so popular is that she talks candidly without pretension about things that women feel uncomfortable about," said Lee TaekGwang, a professor of culture studies at Kyunghee University. "She talks about topics that we don't dare to talk about, especially on women's issues."
About cosmetic companies' promises to make women younger and prettier, Park scoffs, "You just have to be born again."
Offering make-up tips to help people look a decade younger, she warns teenage viewers, "You guys shouldn't do this or you'll look like infants."
On YouTube and Instagram Park and her granddaughter document adventures such as kayaking on the Han River in Seoul and doing a magazine shoot. The duo recently went to Japan's Tottori prefecture.
Park, whose father refused to send her to school because she was a girl, is having the time of her life.
As a teenager, she cut firewood in the mountains, walking hours to haul it home. A neighbor gave her brief lessons in reading and writing. She does not know how to spell most words.
"My mom and dad didn't teach me even though we were not poor because they wanted to put me to work," she said. "As I do YouTube now, I feel sorry that I haven't been educated."
Still, nothing deters Park from writing, even if her Instagram posts are almost illegible and need "interpretation," she laughs.
Her fans have dubbed her unique way of expressing herself, with no spaces between words and respellings like "shampangyi" for champagne, as the "Makrye font." They compete to guess what they mean.
Even though Park's family was relatively well off, she was left on her own when her husband ran up debts and abandoned her and their three young children. She woke up every morning at four to run a restaurant, returning after nine at night. She repaid the debts and raised the kids on her own at a time when many single mothers were forced to put their babies up for adoption and received little to no government assistance.
All three children finished high school, and Kim, her granddaughter, was the first in the family to attend college.
Asked how long she would run her diner, Park replies in a second.
"Until I die."