A fountain the viewer has already seen
The combination of soda and Mentos was known to internet audiences long before this macro. In 2006 Fritz Grobe and Stephen Voltz of EepyBird turned a multitude of diet Coke bottles into a fountain spectacle. They filmed the big experiment on April 29 and posted the video on their website on June 3. More than ten years passed between that demonstration and the wave of the macro: the spectacle's popularity prepared an easy association, but it does not determine the date the picture was made.
The vigorous foaming is explained by a physical process. The rough surface of the candy gives the carbon dioxide dissolved in the drink many places for bubbles to form. The gas quickly escapes, dragging the liquid along. This mechanism was studied, among others, by physicist Tonya Coffey with students from Appalachian State University; the work appeared in 2008. In meme reading, the details of physics are replaced by a simple memory of the result: a small candy can cause a far more noticeable movement of the whole soda.
How the experiment became a conversation
On May 22, 2018, user H1D3H0 proposed the macro on Reddit's r/MemeEconomy. The Coke received the role of an angry girl, and the Mentos the phrase “calm down.” The joke depicted advice that, instead of calming someone, provokes an even stronger reaction. In the original thread the author explained that he was looking for a picture with sufficiently large candies for captions. This is the authorship of a specific remake, not a confirmation that he himself photographed the bottle and palm.
In later variants, the place of the girl was taken by viewers, fans, and participants in various disputes. Captions on the candies named a remark, a piece of news, or an action that would sting them. So the photo acquired a convenient pair of roles: accumulated tension and a small push. The macro relies on the moment before contact, so a single picture is enough for a short story. The viewer sees the cause and builds the next scene, with the violent reaction, on their own.
Four candies on a palm
In the photo, a bottle of regular Coca-Cola stands on the left against a background of gray slabs. The red label occupies the middle, and the dark drink is visible at the top. On the right enters an open palm holding four white candies. The bottle's neck is cut off by the upper edge of the image; the fountain and the falling candies are not shown. There are no new text labels over the photo. Before the viewer is a clean template for assigning roles to two objects.
The white candies stand out well against the palm and look quite small next to the bottle. This contrast supports the joke about the disproportion between cause and response. The person with the palm can, in the meme's story, provoke deliberately or fail to understand what is about to happen. The difference depends on the caption. The picture allows both mischief and awkwardness: the same action can be read as deliberate teasing or as a clumsy way of smoothing over a conflict.
Remarks after which the conversation boils over
One invented variant is about a book club: the bottle is “an hour of discussing an ambiguous ending,” and the candy is “the author simply forgot to finish the novel.” A small remark cancels out a complex analysis and launches a new wave of argument. In another joke, the Coke stands for a school group before a hike, and the Mentos for the message “the tent is with the person who isn't coming today.” Here the burst is tied to news that suddenly changes the overall plan, not to someone's irritable character.
A third example: the bottle gets the caption “a friend who spent three days setting up a home theater,” and the candies get “but the sound on the phone seems about the same.” The remark unintentionally devalues a great effort, and the viewer anticipates a long reply. These situations give different sources of reaction: a dispute over interpretation, a disrupted preparation, and wounded pride. In each case, a small palm with candy marks the beginning of the story, and the hidden fountain becomes its imagined continuation.
