The Oreo cookie turns 100 years old this week.
The National Biscuit Company, later called Nabisco, sold its first batch of the Oreo cookies to a grocer in Hoboken, N.J., in 1912.
Ever since, millions around the world have been licking and dunking the delicious treat.
Fans young and old are celebrating the birthday of this chocolate cookie icon. Who doesn't love birthdays?
The oreo cookie is a favorite snack for kids and kids at heart.
"I'm eating an Oreo," one child said.
"I just eat it like a whole sandwich, and dip it in my milk," another said.
The chocolate wafer and single filling layer reigns supreme with consumers in more than 100 countries to the tune of more than $2 billion in annual global sales.
"I'm not sure how many people would have predicted the Oreo cookie, something as simple as some cream between two chocolate wafers would be around 100 years later," said John Murray, associate professor of marketing at the University of Iowa.
Whether you twist them, dip them, stack them or just chomp them - the chocolate and white cookie has enjoyed great marketing success.
"Do you take it apart? Do you dip it? Dunk it? Throw it all in your mouth at once?" Murray asked.
And those who loved milk's favorite cookie long ago still enjoy it today.
"My sister Ruthie would take them all apart and lick them, and them put them back together," one resident at a senior center said.
"Chocolate. They're dark. They're chocolate. They're a good bite. They're good," explained another resident.
"Oreo cookies were always my family's favorite. And all you needed to do was open it one day and it was gone the next," another senior said.
On this birthday, many hope the cookie icon will stay around for many more licks, twists, and dunks.