I dared my wife to take some nude photos while the window blinds were open on a rainy day. A few people walked by but I don't think anyone saw anything.
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 ...