Description:

The term 'felek' originally referred just to the cheeks of the human face in Old Common. During the early period, it came to also refer to the cheeks of the buttocks, possibly through a calque form English.

Probably also as an English calque, it came to be a word for showing disrespect for someone or something.

Noun:

It is a literal way to refer to the cheeks of the face or buttocks. It also means in general disrespect, nerve or chutzpah, perhaps from the igame of showing your buttocks to show disrespect. It tends to be lighter and more humourous than other words referring to disrespect and may draw an amused or grudgingly admiring response as much as a hostile one.

Verb:

Felek is a skurun verb, with an ergative disrespected and an absolutive target of disrespect.