Some pimp businesses have an internal structure – built around violence – for dealing with rule breakers. For example, some pimps have been known to employ a "pimp stick", which is two coat hangers wrapped together, in order to subdue unruly prostitutes. A variation is a "pimp cane", used for similar purposes. Although prostitutes can move between pimps, this movement sometimes leads to violence. For example, a prostitute could be punished for merely looking at another pimp; this is considered in some pimp milieus to be "reckless eyeballing". Violence can also be used on customers, for example if the customer attempts to evade payment or becomes unruly with a prostitute.