The process of dunking ones testicles into ink or paint, then proceeding to receive falatio from a partner, leaving loveheart shaped mark on falatio givers chin.
This can be done upside down and leave the loveheart shap mark on the falatio givers head.
Jill: Have you seen kims new tatoo on her chin?
Jane: That's not a tattoo.... it's a love stamp.
Jill: oh my !