Top Definition
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.
by Jovian09 January 08, 2010

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