A fork of Rural Dictionary
1. When a consistently evil doer has something very bad happen to them.2. Negative Karma returning.
Steve was stealing money from the orphanage. Then his house burned down. He got his Karmuppance.
If you can't decide if someone is a dick or a douche, they can be a Duke. Often refers to competitors in business. Someone who is not well liked.
Secured this piece of business from that duke over at XYZ company.