Do you know about Lucky Hole? This unique service became popular for allowing women to perform oral sex on an unseen man's cock through a hole in the wall. Customers pay money into an opening at crotch level, where psychedelic female figures are painted on the wall, and receive sexual services without ever seeing each other's faces. The anonymity allows both parties to enjoy the encounter discreetly. Although this style flourished in the 1980s and later declined due to the rise of pink salons, it still maintains a solid presence today. This time, married women who wanted to experience the thrill of the sex industry—without exposing their naked bodies—decided to give it a try.