Here is a neat trick i like to do, make a macro that says /mountspecial
With that macro if you are standing start running and hit that macro and you will moonwalk, or if you are in flight form you will barrel roll, if you do it while mounted does same as if you were standing, and if you do it while on a gryphon, the gryphon moves up and down.

If you don't want to keep spamming the macro you can make it:
/mountspecial
/mounspecial