WWE's John Cena bumps Fred Flintstone from Pebbles boxes

Pro wrestling has a history of larger-than-life characters throwing each other out of the ring but this has to be a first — knocking a caveman off of a box.

That's exactly what WWE Superstar John Cena has done by replacing the iconic Fred Flintstone on the popular Fruity and Cocoa Pebbles cereal boxes.

Yabba Dabba Don't.

Fred's stint on the sidelines won't be permanent because Cena's guest spot with Bamm-Bamm is for a limited time promotion.

"It's been a life-long dream to be on a cereal box and I'm proud to represent WWE as a partnership with Post," said the 10-time WWE champion.  "I'm looking forward to joining millions of families at their breakfast table across the country."

The idea came about by chance after a 2012 promo for WWE featured fellow Superstar Dwayne "The Rock" Johnson calling out Cena.

"Enjoy your Fruity Pebbles, you Yabba Dabba b---h,"he yelled.

The family-friendly WWE and Pebbles cereal seemed like a perfect match.

Johnson later tweeted to Cena: "I assume my royalty check for this is in the mail #YoureWelcomeJohn."

The boxes featuring Cena are in stores now.