You get a snack for that, for the creativeness.
Although I couldn't do that to my glassware, I did do it with a 2-necked RBF once, using a normal downpipe and a rubber stopper, it worked pretty well.
But, problem is, you ever thought how much pirhana solution is gonna be needed to burn off crap of that caliber?
Considering I had to base-bath my glass pipe for a couple of hours to get out the worst of the baked on gunk, I wouldn't want that on my glassware, bong tar is the worst, give me mercury waste or Cr(VI) any day, at least its less toxic and doesn't stick everywhere