Star Trek: Deep Space Nine

It isn't just me who thinks the whole way the show approaches Ferengi ears is weird, right?

They have women stroking them in public, which gives the Ferengi pleasure.

They have women and men grabbing them in public, which causes them pain.

At one point Ishka (Quark's mother) grabs both her sons' ears as some kind of discipline.

So are ears sexual organs? Or just pleasure organs? Or just very sensitive organs?

Or some kind of combination of all three?