[peterloo]

that's nonsense.

I believe that doing this joke is unaccpetable, for its nature. A 21-years old is supposed to be mature and able to determine good and evil, isn't it?

I know that they're doing this for fun, yet they've past through the bottom line. If others get offended, this act is definitely an offence. Perhaps the watchman has a (religious) belief that looking at others' breast in a sin. These two womans offended the watchman by showing him stuffs that he wasn't supposed to see, thus he gets angry and calls the police.

(I'm not trying to say that being a peeping Tom or whatsoever is totally acceptable)