What's shown
The picture is split into two parts. At the top, against a light background, sits a ginger tabby cat with a tired, displeased expression, with "4:19" written next to it. Below, in the same style: a cat with dreadlocks and a knitted hat in the colors of the Rastafarian flag, against a bright psychedelic rainbow and swirls. Next to it is written "4:20". The contrast between the calm first frame and the colorful second one forms the basis of the joke.
Importantly, the image isn't tied to one specific character. It's a template in which the top part can show any subject, while the bottom shows the same character in a "new" state. The cat here serves as a convenient stand-in for a person and shows how the meme gets carried over onto animals and objects.
Origin
The earliest known version appeared in August 2013 on Tumblr. It showed a clock reading 4:19 next to a photo of a teenager, while the bottom panel showed him at 4:20 with a joyful expression, and in the original version the change of state hinted at drug use. The user who posted the first version later deleted the post, so the details of the original source aren't fully confirmed.
The format then quickly spread to Reddit: in late 2013 it was posted in themed subreddits, and in early 2015 a version appeared featuring a character from a TV show. Later the template got numerous variations, including caricatures, political figures, and celebrities. The link between the time and cannabis culture rests on a custom established in English-speaking circles that became popular long before the meme, so the exact date when the number "4:20" itself emerged as a signal hasn't been established.
How it's used
A typical scenario for the meme is to show a character at the start and "20 minutes" after a certain event. The top usually features a neutral or dull image, the bottom the same face but in a state of euphoria, confusion, or sudden joy. A caption is barely needed: the shift in time on the clock alone sets up the story and makes the reader fill in the reason.
The variations allow for any transition: from "before and after coffee" to "before and after the news." The cat with dreadlocks and a psychedelic background was chosen as the most recognizable marker of an altered state, which is why it often appears in compilations in that exact spot. This choice shows how the meme turns from a joke about drugs into a universal contrast template.
Why it works
The meme's main strength is visual directness. Two clocks, two states, and one character register instantly without text. The viewer fills in the story themselves: what happened between 4:19 and 4:20, and why the facial expression changed so much. This vagueness is what makes the format flexible.
Besides, the joke plays on expectation. Twenty minutes may seem like a trivial span of time, yet the picture shows a dramatic change. This gap between the modest timeframe and the scale of the change is what triggers the laugh. Thanks to its simplicity and recognizable aesthetic, the meme remains one of the most durable contrast templates on the internet.