To have a disgusting female with large, saggy (possibly "child bearing) breasts drop her nipples/areolas into your face and/or mouth.
- A one of many female versions of "tea bagging."
- Does not exclude males of dropping their nipples/areolas into one's mouth and/or face, but less common.
- In reference to the large, droopy, milk producing cow utters.
Sarah, being the fat, nasty girl at the party, would always wait for unsuspecting subjects to pass out and then pull out her stretched marked boobs and drop them into their faces, therefore "utter dunking" them as pictures were taken.