Aaron Judge and Jimmy Fallon filmed a Tonight Show bit at an MLB store.

Aaron Judge mugged on "The Tonight Show" after conquering "The Show."

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After being elected AL MVP, the Yankees slugger had fun with Jimmy Fallon.

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Spies say Judge sneaked into the MLB NYC Showroom in Midtown to film a piece with the former "SNL" comic for "The Tonight Show" on Friday night.

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Judge dressed as an umpire and Fallon as a catcher to prank shoppers at the venue. They posed in front of Yankee Stadium.

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An insider stated Friday's stunt across from Fallon's Radio City Music Hall, and 30 Rock studio was "fun."

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Fans lined up inside the store to see Judge. Judge had disguised himself for Fallon before. As a rookie in 2017, he went undercover to interview New Yorkers about him.

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"I'm here to see what Yankees fans think of Aaron Judge," he remarked. Some said, when he was less well-known, "Judge will be a star."

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His 62 homers broke Roger Maris' 61-year-old AL record.

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