Starting the dash animation then letting off on the control stick and then dashing again at the right time. With captain it looks like a little bunny hop with dashing. It's most noticeable and easiest to do with captain and marth as there dashes are somewhat unique. With the right timing you can travel from one side of FD with starting dash animations being able to dash dance at any particular point in time. Has this been used/found before? I don't really see that big of a use for it other than mind games. Probably a little lower use than moonwalking. The timing isn't that hard to get either depending on the character.