I call my wife my naughty nanny because she was actually a nanny when I first met her. She no longer does that of course but still indulges me from time to time if you catch my drift.
Each token is about 5-10 cents and you can tip 1 or as many as you like. Every token amount has an effect of some kind on the performers."
The tokens vibrates the toy remotely which is usually already inside the woman. So your 5 cents makes her shiver. After awhile, she does something extra (sexy) special ...