"At that time in the US, Coke Cola was running this 'Share a Coke' ad campaign. Basically, they printed a bunch of labels on their bottles that said 'Share a Coke with *Person's Name*." ...
"We wanted to have a little bit of a humorous tone to this," Cha added. "Know The Signs" echoes Diet Coke's advertising from the 1990s, when the brand "was all about the Diet Coke break," Cha said.