Note to Jon Stewart: Don't ever mess with John Cena! The former Daily Show host paid for his treachery on Sunday night's Summerslam when he helped Seth Rollins defeat Cena. Despite pleading his case that he only wanted to prevent Cena from matching Ric Flair's record of 16 world championships, Stewart found no mercy. Here is the full segment with Stewart and Cena, who takes his revenge around the 4:50 mark.

This Tweet from WWE cuts right to the chase: