Oprah Winfrey has been a television personality for so long that most people think they know everything about her. However, there is big Pet Peeve that Oprah has, and no one is allowed to do it around her. People in her office and those who work with her know what it is.

Reese Witherspoon is Oprah's co-star in "A Wrinkle in Time" that aired in theaters on Friday, March 9, 2018. While working together, Reese happened to chew gum in front of Oprah that caused the queen of television to go into a rage.

Oprah's pet peeve: Chewing gum

Last week, Oprah appeared on the CBS talk program, "The Late Show with Stephen Colbert." During the conversation, the 64-year-old media mogul revealed that she just can't stand to be around people when they are Chewing Gum.

It is one of her biggest pet peeves that started when she was a child living with her grandmother.

Oprah revealed that they grew up poor in Mississippi, and her grandmother had a habit recycling chewing gum by sticking old gum in different places around the house so she could chew it again at a later time. She would stick it on the bedposts, on pieces of furniture, on the cabinets, or wherever she thought it would be safe. Oprah wasn't embarrassed to tell that unsanitary story about her grandmother. She added that it bothered her when she would bump into the used chewing gum around the house. In fact, she said she had a fear of it because it made her feel strange whenever she rubbed up against it.

Winfrey emphasized how much she disliked it then, and she still dislikes being around chewing gum now because it brings back those bad memories. Therefore, she has banned chewing gum in all her offices. She added that it is unfortunate that she cannot bar people in the world from chewing it.

Country that bans gum

Oprah wanting to ban chewing gum in the world is not far-fetched.

Chewing gum is banned in Singapore. The only exception to the ban is for dental and nicotine gum. There is a ban on importing the product into the country. Since 2004, only chewing gum of therapeutic value is allowed there, according to the "Regulation of Imports and Exports Regulations." Doctors must write a prescription for gum if patients need it.

People often wonder why gum is banned in Singapore. The ban on the sale and import of chewing gum was enacted in 1992 almost for the same reason that it became Oprah's pet peeve. The government did something about it after vandals continued to stick their used gum on the doors of the trains of the public transit system.