The next four million boxes of Fruity Pebbles cereal see Fred Flintstone sidelined and replaced with WWE’s John Cena.

The connection started, of course, when The Rock first used Fruity Pebbles as a derogatory term for Cena, but soon the signs started to appear and the fans really got into it. Never one to miss a chance, Vinny Mac signed a deal with the cereal company and John Cena is now featured on the boxes as well as a Wrestlemania competition and wrestlers to cut out on the sides of the boxes.

The Fruity Pebbles tie-in is another chance to promote the forthcoming Wrestlemania 29, coming from New Jersey where, unless something super surprising happens before then, John Cena will once again battle The Rock in a repeat of last year’s headlining bout.