A public display of indecency; including but not limited to: spilling drinks on oneself, blowing cigarette smoke in another person's face, flashing one's genitalia to multiple members of the opposite sex in a public setting, vomiting in the street, etc.. If the action is far from classy, it may be considered an Oreg.
The Vick: Oh my gosh, did you just see her throw up in that bush?
The Dy: Wow, most definitely an Oreg.
The Dick: What a dumb bitch!