John Cena has tossed his hat into the ring of "worst wedding guest" ever.
While appearing on "The Tonight Show," the "F9" actor revealed that he and his brother Dan got into a full-blown fistfight while at another brother's wedding!

It all started with John's wedding gift.
"I thought it would be a nice gesture to open the bar," he told Jimmy Fallon. "Drinks are on me, that's my gift to the bride and groom. Nobody would have to pay for anything."
Soon, though, John and Dan got a little too heated, thanks in part to the open bar.
"I found out it was a mistake when my brother Dan and I got into a fistfight in the middle of the dance floor and closed the wedding down," he said, as he's able to laugh about it now.
The violence was a shock to most the wedding guests, but not everyone.
"You could tell, right then and there, who were guests, and who were a member of the Cena family," he said. "The guests were like, 'What are you gonna do to stop it?' And the Cena family's like, 'No, no, let 'em figure it out. Let 'em do it.'"

Elsewhere in the interview, John spoke about getting physical in a different realm, a wrestling ring. John confirmed a longstanding suspicion that he would return to the WWE, but he didn't set a timetable for himself.
"I haven't had my last match and I look forward to my next match," he teased.