There you are; you've after completing a stonker of a set on live television, you see fit to unleash your inner 'Tina', and spinning around triumphantly, your heel goes from under you and everything you've done prior to that goes spectacularly arse over tit. 

The best bit is when Fallon, instead of initially helping her up, decides to get on down on the ground with her, whereupon he mumbles "this is just one of those things." Yeah, "one of those things" that happens on FRIDAY THE 13TH. Just a theory...

You can watch her full performance below.

Via Uproxx