When going down on my wife I will sometimes surprise her by "humming". It is not like humming a song or anything like that, but rather it just creates a vibration in and around my mouth. It drives her wild.
Girls have you ever had somebody do this to you?
Guys (or girls)have you ever tried this on someone else?
Girls have you ever had somebody do this to you?
Guys (or girls)have you ever tried this on someone else?