"I think they thought that she said 'marijuana' because we are from south Georgia and kind of have an accent. So, 'Moana,' marijuana?" Davis told WMAZ Channel 13.
Kensli Davis posted a photo of the cake on Facebook, and it has gone viral with more than 11,000 shares, more than 250 comments and 10,000 reactions.
"I was very impressed by the artistic capabilities of them to be able to do the design that they did," she told WMAZ.
Dairy Queen offered to make a new cake, but Davis kept her unique design.
"I was very shocked and it was hilarious to me," she said.
Next year, she said, she’s going to keep it simple.
"It won't be 'Moana' or marijuana. I just won't get a design at all. I'll just get a regular ice cream cake if I have to," she said, laughing.