Oddly satisfying is an attempt to describe an inexplicably pleasing quality that watching an otherwise mundane object triggers in its viewer. The term refers to images of videos encompassing everything from dominoes falling in perfect lines to smooth cake icing to the wonderful symmetry in nature.

The concept itself gained quite a cult following online mainly due to the subreddit in question. The group was created back in 2013 and has now become one of Reddit’s largest communities, ranking 29th on the list.

If you’ve ever browsed your social media feeds and suddenly stumbled upon videos of physical objects being manipulated in highly specific ways — melted, smoothed, poured, carved, sliced, mixed, dissolved — you know the feeling. It may have to do with symmetry, patterns, and repetition. Or it may be related to soothing imagery and sounds that allow you to absorb the experience, which our brain seems to find innately enjoyable. It still holds a sense of mystery, and that’s all part of the beauty.

According to an American insurance company Lemonade Inc., at least one video with an #OddlySatisfying hashtag is posted on Instagram every minute on average, and there’s been a dramatic spike in Google searches for these soothing examples over the last few years. So why did this trend suddenly become so popular? How did it take the internet by storm?

Explaining why we like anything can be complicated, but among the many examples floating online, there seem to be some clues. So to learn more about this phenomenon, we reached out to Deborah S. Bowen, Ph.D., an Assistant Professor of PR Instruction at the University of South Florida. "It’s been proven that satisfying videos release combinations of 'feel-good' hormones, like dopamine and serotonin," she explained that part of the appeal of these visuals is that they bring out happiness and positivity.

"We know that a chemical element is associated with these wonderful little videos (and part of the trick is that these videos should be short!), but we also respond to them on an unconscious — if not visceral! — level," Bowen told Bored Panda.

"Part of the 'satisfaction' comes from the visual, which is usually the obvious and cathartic resolution or completion of a task. The explanation here is obvious: there is a deep sense of satisfaction when a job is completed," the professor said, adding that oddly satisfying clips usually have a sensual element to them: "Extracting a blackhead, for example, or the little 'clicks' we often hear in restocking videos (a favorite of mine!)"

Another explanation, according to Bowen, might be that these images embody things "as they should be". "We are witnessing order being imposed on chaos," she explained. "Even those oh-so-dreamy symmetrical swirls of icing on a cake — this, too, is forming a version of a reality that we can control."

But as the professor pointed out, we humans are visual species and have always found aesthetically pleasing images to bring a calming or soothing effect. So, by itself, the concept of oddly satisfying has existed for a long time, we just didn’t have the language to express it.

"Embracing the term 'oddly satisfying' is a strong public relations move for creators who generate this kind of content. A searchable term also facilitates locating this sort of video when someone is actively searching for it. Providing context for this kind of content allows for any number of new creators and viewers to become aware of this growing genre," Bowen added.

Still, the word "oddly" gives her pause. "The universality of these videos must mean that there is spiritus mundi at work here. Perhaps we as an audience don’t want to admit that we derive so much physical and psychological pleasure from these, so we cast them as 'must look at' content, like the proverbial trainwreck."