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Jimmy Fallon tried on Madison Bumgarner‘s underwear on live TV last night … and it was hilarious.
The World Series hero appeared on “The Tonight Show” — armed with a gift for the talk show host … a pair of the “Mad Bum” undies that Jockey started making in Bumgarner's honor.
FYI — the undies have quickly become collector's items … since Jockey only made 2,000 pairs to commemorate the pitcher's historic World Series performance.
Fallon was pumped about his new drawers … and tried 'em on right on the set.
Bumgarner couldn't have been prouder.