The “rainbow kiss” recently shocked the internet — and not in a cute, colorful way. It involves a mix of menstrual blood and semen shared during a kiss after a 69 position. Yep, it’s intense.

People online are saying they’re “scarred for life” after Googling it. Some confuse it with “snowballing,” another NSFW act involving semen.

Experts say rainbow kisses aren’t for the faint of heart — and they come with STI risks, especially if there are cuts or infections involved. Safe sex and regular testing are a must.

So, if you haven’t looked it up yet… maybe don’t.