The term catatonic trance came to mind when I was watching this gent strut his Michael Jackson moves, although he did occasionaly lift one leg.
He was really not very good at this. Most of the time he was simply trembling and sweating copiously. Of course no one could hear his music, and that simply added to the comical appeal.
These four girls were dancing to one side, copying him, and having a real laugh, which he obviously enjoyed, for every now and then he gave half a step towards them, enough to send them scattering away in utter panic, simply to re-group and do it all again.
The climax came when one of their friends wanted to take a picture, and this was the closest they allowed themselves to come. My next shot shows them flying off again after Michael XXXL turned and invited them closer:)