VIDEO : John Cena Responds To 'The Rock's Insults From Jimmy Kimmel Live

Dwayne " The Rock" Johnson is very competitive.
The Rock delivered some trash talk with a smile on Jimmy Kimmel Live.
He has a friendly rivalry with wrestler John Cena.
With a smile on his face, The Rock said he?d gladly kick Cena?s teeth down his throat.
Rock said Cena would have to stick a toothbrush ?up his $#@ to brush them.?
Cena said that threatening to ?clean his butt? is not really a threat.
It?s more of a promise.