The Fine Art of Mooning

Per Wikipedia: Mooning is the act of displaying one's bare buttocks by removing clothing, e.g., by lowering the backside of one's trousers and underpants, usually bending over, and also potentially exposing the anus and genitals. Mooning is used in the English-speaking world to express protest, scorn, disrespect, or for provocation, but mooning can be done for shock value, for fun, as a joke or as a form of exhibitionism.