Steve-O Brings Bam Margera on Tour, Jokes He's Britney Spears of 'Jac

Play video content THE BOYS ARE BACK

Steve-O's new opening act for the first 9 shows of his comedy tour is Bam Margera ... and the 'Jackass' alums hit the stage together to workshop some new material.

We got video of Steve-O shocking the packed house at the Elsinore Theatre in Salem, Oregon last Sunday -- and Bam's surprise appearance drew huge applause from the crowd.

In the video, Steve-O helps Bam work on some jokes ... comparing Bam's life to Britney Spears' and telling a few stories from rehab.

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Steve-O told the crowd he's bringing Bam along for "The Bucket List Tour" because he was terrified Bam was going down a path that would end in an early death. He said he wants his buddy on the road with him to see if it's possible for him to lead a healthy life and find a happy ending.

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