What does butcher's kiss mean?

butcher's kiss meaning in Urban Dictionary

A 'butcher's kiss' is a prank or revenge act a menstruating woman can play on her sleeping partner (or any other sleeping person).The intention is to leave a bloody smear across the victim's face or body, which is the 'butcher's kiss', by direct contact with the labia. Extra props are given if the victim is not roused during the act. Further props are given if the victim is still unaware of the butcher's kiss while in public.