As an actor, you have to do what you can to attract interest to your latest project, even if that means engaging another grown man in some truly absurd trash talk.

This rule is clearly one John Cena knows well. The "Blockers" star has been busy making appearances to promote the film, and in the process, he has gotten into yet another war of words with fellow WWE vet Dwayne Johnson (who incidentally is out doing publicity for "Rampage"). The two are going at it again, and honestly, it's hard to say if it's completely ridiculous or actually utterly brilliant.

Cena appeared on "Jimmy Kimmel Live!" on Wednesday night, just an evening after Johnson had been there. When Kimmel asked Cena about their past rivalry -- which included still more trash talk, of course -- the action star said that they've become friends. Kimmel let him know that Johnson had said as much the night before, but that he still had some choice words for Cena.

"If you ever act up ... I will knock your teeth so far down your throat, you'll have to stick a toothbrush up your ass to brush them," Kimmel read on behalf of Johnson.

Upon hearing it, Cena decided he wasn't "going to take that." He delivered a lengthy and equally over-the-top response to Johnson, all while managing to plug his movie.

"There's more traffic in that region than a Monday on the 405, in both directions," he said of having objects more impressive than a toothbrush in his rectal area in "Blockers."

Cena went on to analyze what a toothbrush does and surmised that Johnson wants to "clean [his] butt." That idea was fine with the actor, but he did also have a warning:

"If I was you, I'd bring a bodysuit and Latex gloves, because down there it's like a Mississippi cornfield in a downpour. ... It is all just mud and vegetation, pal. ... Do you really want to smell what John Cena is putting out?"

The words itself don't do it justice. Watch the full diatribe below.

"Jimmy Kimmel Live!" airs weeknights at 11:35 p.m. ET/PT on ABC, and "Blockers" hits theaters April 6.