I'm fan of the belly button, and hood - the current 'Live-In' has both.
Beyond that I'm afraid it's bit of a turn off.
2 amusing stories in a piercing vein......
My daughter, then just 4, wanted to get her ears pierced. My (now ex) wife and I said no, but she could get them done when she was older (say 27 or so!). She then tells her great-gran that mum and dad would not let her get her ears pierced, because.......... she reckoned that she had enough holes in her body already. Great-gran misheard her, so daughter proceeded to reel them off and their location! To which GG said 'my, my young lady, you seem to know your way around!' At which point everyone in the room coughs or snorts their tea up as they collapse into hysterics!
Whilst working in a factory, as a production manager, a girl in one of my teams was known to be a rug munching lezzer, with a predilictation for all things pierced.
One afternoon, I wandered into the area where she worked, and I knew that there was something up....
'Whats up?' quoth I to the team Supervisor...
'Oh, nothing much, its just that the girls (all girl production team - nice except for when the painters were collectively in each month!) have a question for you and XX (the lezzer in question) has a picture to show you'.
'Oh, what is it' says I.
The question was, ' wot with you being ex-RAF and that, is there anything that would shock you?'.
'Nope' says I.
'OK, go one show him then' said one of the girls.
Up wanders the lezzer to show me a picture, which was a tastefully 'arranged' minge - you know the sort, bits and pieces laid open etc - no resembalance to a badly packed kebab and shaved to an inch of its life - but with what appeared to be an absolute ton of piercings (studs, rings, bars, things with dangly things on them etc etc) in, on and through it.
'Is this you? asked your truly.
'Yup, there over 72 separate ones in there' says the rug muncher 'My girlfriend takes over 90 mins to put them all in each day - after I have cleaned myself'.
'Oh - nice', says I.
Desparately trying to not react - cos thats what the girls all wanted me to do - I said 'look love, you've clearly got a good photographer to take your pictures, but myself, I think you look like you've been hit in the cnut with a chain link fence. Now put the picture away and get on with some fcuking work!' - as I beat a hasty retreat to my office for the next 2 days!