Patch Adams em Porto Alegre: 'mooning' é ato obsceno?

Sobre o ultraje público ao pudor e o crime de ato obsceno, leia:

http://profeanaclaudialucas.blogspot.com.br/2012/02/sobre-o-ultraje-publico-ao-pudor.html

(*) 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, whether also exposing the genitals or not. Mooning is used mostly in the English-speaking world to express protest, scorn, disrespect, or provocation but can also simply be done for shock value or fun. Some jurisdiction regard mooning to be indecent exposure, sometimes depending on the context.