<span style="font-family: Arial; font-size: 10pt;">rainbow kiss urban dictionary </span>A Rainbow Kiss, according to Urban Dictionary, is a controversial and explicit sexual act involving the mixing of menstrual blood and semen through oral sex. Often cited in shock-value contexts, it&rsquo;s not widely practiced and generally discussed more for curiosity or taboo-breaking. Always prioritize consent, hygiene, and open communication in intimate experiences.