Megyn Kelly ripped into ABC News' David Muir on Thursday for showing his "abject vanity" when he decided to cinch his "fake fireman's jacket" he wore while reporting on the devastating Los Angeles ...

MEGYN KELLY (HOST): You know ... That's where I spent all my, you know, formative years in Syracuse and Albany. And it's very Midwestern in its tenor, in its culture. We have a lot in common ...