A "rainbow kiss" is an innocent-sounding name, however, the slang term, which is trending on TikTok, has a rather disgusting meaning.

Like many don't Google trends, "rainbow kiss" content is all about baiting. It involves one internet user discovering an explicit Urban Dictionary definition and then telling others not to look it up for themselves.

Despite being told not to do so, people still search the term in question. Let's explain what it means.

What Does 'Rainbow Kiss' Mean?

A "rainbow kiss" is a type of kiss that can only be performed during intimate relations with a woman who's experiencing her monthly menstrual period. The "rainbow kiss" involves the mixing of both, let's say, fluids, that are present during that time-specific activity, putting them on the person's lips and then kissing.

Who Came Up With 'Rainbow Kiss?'

Like many explicit slang terms, the original definition for "rainbow kiss" was added to the Urban Dictionary database well before the invention of social media. For "rainbow kiss" specifically, its definition was added to the site in March 2003. However, it's likely that the phrase itself predates the modern internet.

Why Is 'Rainbow Kiss' Trending On TikTok?

Despite a 2003 origin, the term "rainbow kiss" is trending right now online, mostly due to virality on TikTok. While many Millennials might be well aware of the term's meaning due to edgy classmates when they were in middle school, a whole new generation on TikTok is currently discovering what a "rainbow kiss" is.

Like many pieces of shock media, the most notable form of content surrounding the "rainbow kiss" buzz is reaction videos, in which people film themselves before and after looking up its meaning.

@weluvabree sorry bae but no💔#fyp #fypシ #viral #xyzbca #4u ♬ original sound – 🫶🏽

@rjdawick

yeah whoever decided to invent this, is a whole different level of freak

♬ original sound – AntiNightcore

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For the full history of "rainbow kiss," be sure to check out our encyclopedia entry for even more information.