Can't say as I begin to understand it. That (to me) is like having a thing for elbows or teeth: each as I see it is purely functional and has zip to do with sex.
I'm reminded of a scene in
Taxi where Louie di Palma (Danny de Vito) is talking to some smart-ass kid. The exchange is something like this:
Louie : This your mother? (points to snapshot)
kid : (snotty tone) Yeah.
Louie :Hmph. Nice bagonzas.
kid : (snottier tone) What are bagonzas?
Louie : (suspicious) How old are you?
kid : (even snottier tone) Twelve.
Louie :Bagonzas are
feet.
See what I mean?