When Geraldo Rivera calls you out, you just can't let that stand unchallenged. As expected, Olbermann responded to the ex-"newsman's" verbal attack in last nights Worst Person.

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"He called me a midget and a punk and said he'd be happy to fight me and "make a pizza out of me" -- which is kinda funny because I'm about 7" taller than he is. Plus, Geraldo, you should not give me a hard time; I can still remember when you were a big deal...back when I was a kid."