U.S. sportscaster Keith Olbermann called Vancouver Canucks enforcer Tom Sestito the "worst sports person in the world" in his Tuesday night broadcast, prompting the hockey player's 13-year-old sister to reply with some major sass.

The fiery ESPN analyst and former MSNBC host took the fourth-line winger to task over his antics in Monday night's game against the Los Angeles Kings.

About two minutes into the game, Sestito punched Kings forward Jordan Nolan off the faceoff. Nolan did not fight back and the Canucks bruiser received 27 minutes worth of penalties: two minutes for instigating, five minutes for fighting, a ten-minute misconduct and a game misconduct.

Calling Sestito a "boxing hobo on skates," Olbermann threw some harsh words at the enforcer: "I know, I know, it's his job, like the guy who roughs up tardy illegal loan recipients has a job. You give us one second, we'll give you 27 minutes."

For his part, Sestito took the criticisms in stride:

But the ESPN host had to fend off Victoria Sestito, Tom's teen sister:

Olbermann took the bait:

And that instigated a brief flame war:

Two days later, Olbermann acknowledged he learned a few things from the exchange:

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