British actor Christian Bale has been known to portray the millionaire vigilante Bruce Wayne, better known as Batman in three movies already, starting with "Batman Begins" in 2005, followed by "The Dark Knight" in 2008 and finally "The Dark Knight Rises" in 2012. All of those movies were directed by Christopher Nolan.

Moving ahead, Bale thought that he would still be portraying Batman in succeeding Warner Bros. films, but the role has been passed on to American actor and "Argo" filmmaker Ben Affleck.

Bale has grown to love the role, so when the he and Affleck met by chance at the San Diego Comic-Con recently, Bale gave the actor some pretty solid words of advice.

According to Cinema Blend, Affleck was in a costume shop with his kid when he heard someone say "Oy!" The two began to have a friendly chat about Batman, and Affleck even praised Bale's performance as the superhero in the past three movies.

For his part, Bale told him that there is only one thing Affleck needs to take care of before putting on the Batman costume: "Make sure you can piss in that suit!"

The crowd roared with laughter when Affleck shared that piece of information, and "Batman v Superman: Dawn of Justice" director Zack Snyder even added that this time around, they have even created a built-in zipper for Superman star Henry Cavill, as opposed to his stint in "Man of Steel."

"Batman v Superman: Dawn of Justice" will both star Affleck as the aging and embittered Batman while Cavill portrays the youthful Superman. Batman is blaming Superman for causing destruction on earth, and the two superheroes battle out their grievances all the while contending with a powerful alien force that just might destroy the entire planet.

The official synopsis reads: "Fearing the actions of a god-like Super Hero left unchecked, Gotham City's own formidable, forceful vigilante takes on Metropolis' most revered, modern-day savior, while the world wrestles with what sort of hero it really needs. And with Batman and Superman at war with one another, a new threat quickly arises, putting mankind in greater danger than it's ever known before."

The movie also stars Amy Adams as fearless reporter Lois Lane, Jesse Eisenberg as the cunning villain Lex Luthor, Gal Gadot as Wonder Woman, Jason Momoa as Aquaman, Ezra Miller as The Flash, and Jeremy Irons as Wayne's faithful butler Alfred, among many others.