payback
Revenge or retribution. Many people believe the demotion was payback for his refusal to support the legislation. I could see him staggering over to us, drunk as a skunk and looking for payback.
it's payback time
It is time for revenge against or retribution from someone or something; it is time for someone or something to get what they deserve. They stole the championship from us last year, but now it's payback time.