Define Skullcap Meaning

When one gets a headshot with a high caliber weapon in reference to the fact that the victim’s skull would have it’s top blown off.

A sexual action, in which a part of a female's skull is removed, exposing the brain to open air. Then, a male places his genitals on the brain in a style often refered to as "teabagging". The action is highly discouraged as it usually results in death of the female.

A sexual position in which the receiver is lying down face up, the giver places his scrotum on the top of their head like a cap, with their penis going down over the nose, like the nose guard of a helmet, ending with the head in the receivers mouth.
Can also be done with the receiver sitting and the giver standing/squatting above them.