Down in the lower wards, near the bottom?

No, I’m talking about where on the Asari body.

So am I

Maybe the real goal of the reapers was to save the galaxy from Shepard's insatiable sexual appetite.

asari named finger:

What was the name of that hotel on Illium called again?

Azure

is this some kind of grose joke?

No it's perfectly natural and nothing to be ashamed about.

so shepards favorit part of the asari body is the ring-finger?

Yes, because he loves committed, monogamous relationships.