turnabout is fair play

Turnabout is fair play — ~ давай по очереди (так будет справедливо, по-честному); услуга за услугу; ~~долг платежом красен

something that you say which means you will do something that someone else has done because this is fair.

Example 1:Come on, I want to sit in the front seat now — turnabout is fair play. — ...так будет по-честному; так будет справедливо

Example 2:You cook dinner tonight, I cooked last night. Turnabout is fair play.