If you like leaving your mark on your significant other, this news is a little alarming: A 17-year-old from Mexico City after a hickey on his neck led to a blood clot and eventual stroke. Before you get all worked up, death by hickey is super rare, says , M.D., medical director at the Well Path.

We only know of two where hickeys led to strokes, and both of those women survived. It happens when suction on the neck creates a vacuum that shrinks the diameter of the carotid artery, causing it to clog. If you are concerned, Heskett has some simple advice: "Do the hickey below the neck and you’re not going to have a problem."

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