This has to be one of the most bizzare piercings I've ever seen. But you have to admit, it would definitely get you some attention if that's what you're after.
I just think what would happen every time you ate. OUCH!
How about when someone tries to zip that sucker up. Double ouch!
Just the split tongue is out there. Add to that the zipper running up each side of the tongue, and you have a pretty strange thing going on.