That's the true reason (with english translation)
Translation: Your wife: "This is the last time I'm shaving my head barber anna..! I won't be saying yes no matter how many times my husband asks me to get my headshave done from now on..!" Barber: "You say this everytime you come here yet you come here yearly and get your head shaved like a cue ball asking me for reverse shave and all..! I can clearly see you're shaving your head out of your fetish and not for your husband at all..!"