Erlynda
The trend of having a glass belly button; that way, if your head goes any further up your ass, you can still look out and see what the rest of the world is up to.
Boy 1: "Man look at my bling?"
Boy 2: "Dude, thats sad, its an Erlynda."
Boy 2: "Dude, thats sad, its an Erlynda."