Sexytown

In the era of total female supremacy, many males were enslaved and even free males were under the control of a female guardian. Some towns and cities, operating on the logic that all males need to be controlled, enacted leash laws, which stated that all males must be on led on a leash in public spaces. 

Such laws proved enormously popular and many males found themselves collared and leashed for the first time in their lives.

The leash and collar around the neck was the most popular way of leashing a male, 

but some women favored the elegant cock-and-ball leash, where a leash was attached to the male's cock or balls by means of a ring, or else affixed to his chastity cage.

In time, a male whose leash was attached to his genitals, either by cage or by ring, was referred to as being "properly leashed", and was considered more in-line with the New Feminist Party's guiding philosophy.