Honestly, the DB-BJ hadn't even entered my mind, so the brilliance is all yours Sir. It may even become the ultimate sexual act for a male, at least until the inter vaginal isopod is discovered. Could that then be referred to as double dipping?
It could also be a revelation for those very odd women who really don't want to perform fellatio for their men. They can transfer away any thoughts of distaste, and place them squarely on the isopod (here fore to be referred to as isopodBJ).
That also brings to conscious a new nickname for one slimy, profiteering HFer, don't it?