I suggest a y-back thong by 2xist. They have an ample pouch that lifts and puts your stuff out for display, and the back is like a g-string that goes up the crack of your ass, but then becomes 2 strings coming out the top of your crack forming a "y" - half thong, half jockstrap. Very hot looking, and feels like you're wearing nothing. And looks even hotter once the tux trousers are dropped!!!