It's an incredibly simple act involving a body part that's not typically viewed as sexual. Sure it's used in sex but not viewed in the same way as cocks, pussies, asses and breasts. Who knows then why I get so turned on when I'm made to kneel in front of a Dominant Woman (or Man) and made to suck their finger? Adding a blindfold makes it more intense. From Herrin Domino and PetrushkaAnd depending where the finger's been, it can also be very humiliating.
