1
general::
Phrase(s): Turnabout is fair play.
Prov. It is fair for one to suffer whatever one has caused others to suffer. • So, you don’t like being made fun of! Well, turnabout is fair play.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Taking alternate or successive turns at doing something is just and equitable. For example, Come on, I want to sit in the front seat now? turnabout is fair play. This justification for taking turns was first recorded in 1755.
American Heritage Idioms