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Rainbow Kiss

Updated: MAY 6, 2021
Reviewed by Dr. Sunny Rodgers
on May 6, 2021

Rainbow kiss is a slang term for a sex act that occurs when someone is menstruating. Usually, before a rainbow kiss, a person performs cunnilingus on a menstruating partner while they perform fellatio. After ejaculating into their partner’s mouth, the couple kisses to mix semen with menstrual blood. This kiss is called a rainbow kiss.

It gets its name because the semen and menstrual blood are said to create a rainbow when they mix together during the kiss. The rainbow kiss is a variation of snowballing, where one person collects their partner’s semen in their mouth after fellatio and passes it on through kissing.

The 69 position is the easiest position for the mutual oral sex that occurs before a rainbow kiss. To get into the 69 position, one person usually lies flat on their back. Their partner then straddles them, facing towards their partner’s feet, with their genitals in line with their partner’s mouth. The partner on top then leads forward to perform oral sex while their partner does the same. Another common variation sees both partners lying on their sides, with their heads positioned near their partners’ genitals for oral sex.

While heterosexual, cisgender couples typically perform the rainbow kiss, other couples can also adapt this sex act. For example, lesbian couples could perform cunnilingus on one another before having a rainbow kiss if one of them is menstruating. A menstruating transgender person could also perform a rainbow kiss with a partner who ejaculates.

An alternative meaning for the term rainbow kiss is a sex game, purported to be devised by adolescents. Participants playing the game of rainbow kiss wear lipsticks in different colors. They then take turns performing oral sex on a single person with a penis. The different colored marks their lipsticks make on the penis create the rainbow effect which gives the game its name.

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More About Rainbow Kiss

Performing a rainbow kiss can be challenging, as it requires holding blood and semen in the mouth. This requires great coordination, as the non-menstruating partner must orgasm at the same time that they collect blood in their mouth. Then the partners must move their bodies into a good position for kissing while holding bodily fluids in their mouths. For a successful rainbow kiss, you must know your own body and your partner and communicate nonverbally to execute the sex act with full mouths.

While it takes careful timing and communication, a rainbow kiss can help couples bond after one or both of them orgasm. It can also normalize menstruation and help couples feel more comfortable with periods and one another. Evidence suggests orgasms can also alleviate the cramps and irritability many people experience during their period. This makes rainbow kissing can be a good way to reduce PMS symptoms.

However, social taboos around menstruation can impact the way some people perceive rainbow kisses. Some people love engaging in rainbow kisses because they feel naughty. Some people even fetishize periods and period blood. However, others feel queasy about periods and are reluctant to taste menstrual blood.

Menstrual blood and semen can both be acquired tastes. Some people use flavored lubricant during oral sex that precedes rainbow kissing. Adding this lubricant can alter the taste of a rainbow kiss and make it more palatable.

While menstruation is a normal and healthy part of life, you should also consider medical advice before rushing into rainbow kisses. Medical experts also caution against sharing rainbow kisses. They note that semen and period blood can both carry infectious particles, including sexually transmissive infections such as hepatitis, syphilis, and HIV. For this reason, you should only share rainbow kisses with people who have been recently tested and cleared for sexually transmitted infections.

As verbal communication is difficult during oral sex, particularly once the mouth is filled with bodily fluids, you should also discuss your desire to try rainbow kissing with your partner first. If they don’t know what it is, you should explain it in detail so they understand what it involves and what they need to do. Only then can they give their consent, which is essential before you proceed. If your partner is not interested in rainbow kissing, you may try other activities to bring you closer during menstruation.

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