What is rainbow kissing?

Rainbow kissing is a sexual act that involves a person performing fellatio on a man and then swallowing the semen, which is typically colorful due to the consumption of various flavored condoms or food coloring beforehand. The person then kisses their partner, mixing their partner's semen with their own saliva in their mouth, creating a rainbow-like effect. This act is considered to be taboo and not commonly practiced due to its unhygienic nature and potential health risks. It is important to practice safe and consensual sexual activities.