An activity or event that combines business and pleasure. Dangerous at office gatherings.
1.
Bruce: I hear you got a meeting with Miss Smith from marketing tonight. Is it business or pleasure?
Blue: Plusiness, mate. *winks*
2.
Jack: Whoah, is that the porn star from 'Thirsty Bitches'?
Jake: Yeah, dude. We got down to some serious plusiness.
Jack: Get in there.
3.
Jane was fired for engaging in plusiness with the boss.