What’s sauce for the goose is sauce for the gander
Definition 1 of 1
Pro Tip 1/3Metaphorical Use
Imagine equal flavorings for two birds - it means fairness between people. 
She argued for equal pay, saying what's sauce for the goose is sauce for the gander.
Pro Tip 2/3Gender Neutrality
The phrase emphasizes equality across genders but can apply to any group. 
He gets a break every hour; what's sauce for the goose is sauce for the gander, right?
Pro Tip 3/3Cultural Context
Often used in arguments for consistency in rules or treatment among people. 
If kids have a curfew, what's sauce for the goose is sauce for the gander; parents should too.