Being completely unprofessional. Beyond the acceptable realm of ethics or corporate behavior standards as defined in any typical office setting.
Bill: 'Uhm, yeah ... Dave ... can we talk for a minute?'
Dave: 'Sure, sure ... what's up?'
Bill: 'Well, that pornographic mash-up you sent around of your co-worker ... that's definitely 'over the line' ... you shouldn't have sent that around to everyone in the department.'
Dave: 'Oh ... okay ... well, I guess I know where the line is now.'
Bill: 'Well, you should have used some decency and common sense before sending that around. I'm going to have to let you go.'