Posts here got me thinking:

What would the world look like if gynocentric privileges were matched with corresponding privileges solely benefiting men?

I'll go first: Common law marriage, wherein a woman becomes legally entitled to a man's property, resources and financial support simply by living and associating with him for a given period of time.

How about Common law Sex & Housework?, wherein a man becomes legally entitled to sex and domestic services simply by associating with, providing emotional support and listening to the problems of a woman for a given period of time.