People Are Horrified After Learning What A Rainbow Kiss Really Means

By maks in Relationships On 3rd October 2025
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From shocking slang like the Alabama hot pocket to the idea of fluid bonding, plenty of NSFW terms and trends pop up online.

But none have caused such strong reactions as the so-called rainbow kiss. At first glance, the phrase might sound lighthearted or harmless.

Yet people who’ve gone as far as Googling it admit they’re left feeling disturbed, with many saying they’re 'scarred for life'.

After seeing TikToks break down what the act actually involves, countless users rushed to social media to share their disgust and disbelief.

People have been left horrified after finding out what a rainbow kiss entails. @aquariu.s/TikTok
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One user simply wrote: "I am shaking."

Another reacted bluntly: "I should never have searched that…"

A third TikToker was crystal clear: "I'm never going to do that."

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So what is a rainbow kiss, and why has it rattled so many people?

The explicit term refers to an exchange of bodily fluids between a person with a uterus and a person with a p**is.

It usually takes place while the partners are in the 69 position. The difference is that one partner is menstruating at the time.

After ej**ulation, the two partners kiss, one with s**en in their mouth and the other with menstrual blood.

The result is a mix of the two fluids, which is where the “rainbow” reference comes from.

The phrase is often confused with snowballing, which instead involves ej**ulating into a partner’s mouth and then kissing them to pass the sem*n back and forth. 

That can continue until one person swallows it.

According to sex educator Dr. Wendasha Jenkins Hall, PhD, the rainbow kiss most likely originated as a variation of the 69 position before becoming its own extreme niche act.

She explained to Cosmopolitan: "This is a level up from that."

But the big question remains — is it safe to actually try?

Experts stress that everyone involved must be of age and give clear, enthusiastic consent before anything happens.

It is important to be safe when performing the rainbow kiss. Alamy
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Because of the direct exchange of fluids, it’s especially important to know your partner’s sexual health status. Otherwise, infections can be passed on very easily through this act.

Doctors caution against attempting a rainbow kiss if you have any cuts, sores, ulcers, or bleeding gums, since those all increase the chance of infections like HIV and other STIs.

As Heather Irobunda, MD, told Cosmopolitan: "Semen and period blood can carry lots of different infectious particles, such as HIV, syphilis, and hepatitis."

"If you are unsure of your partner's STD status, you should not be sharing rainbow kisses."

If you’re single or entering a new relationship, experts recommend both partners get tested before sex. Regular check-ups every three to six months are also encouraged by health providers like Your Sexual Health.

This article is for general informational use only and should never replace professional medical advice, diagnosis, or treatment.

You should not rely on it to make any major health or lifestyle decisions.

Any choices you make after reading this information are entirely at your own discretion and responsibility.