I just watched a show, and there were competitors arguing with each others then one of them said "Are you happy with it now?" 
and then the woman said "Jazz pants!"

I don't really know the name of the show, sorry. 
It came from a short video clip on the advertising screen in the Mall.
Those competitors were arguing while they were cooking with loud noise, 
that's why I turned around to watch that video and it's ending with that woman said "Jazz pants!" (not *Jazz hands*).

What does "Jazz pants" in this situation mean?