Pete Wentz almost flashed the crowd when his trousers began to slip down to expose his boxers during Fall Out Boy's set at Leeds Festival.

Luckily a quick-thinking roadie leapt into action when the star's jeans reached a precariously low-slung level.

As the crew member spared Pete's blushes (and possibly disappointed a sizeable section of the crowd), the guitarist carried on singing, apparently oblivious to his almost-flash.

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