When a strap-on, angled 15 degrees to the left, is mounted on the forehead of any authority figure and then used to penetrate any orifice of the human body. Usually followed by the infamous Viking Bronze Hammer
Those who propagate the Non-Euclidean Sun Bonnet are oft referred to as 'Bonneteers'.
Bitch came back from work late, so I stuck her with the Non-Euclidian Sun Bonnet and followed it up with a Viking Bronze Hammer. This was all, of course, after I kicked her down the stairs.