Ben Affleck Met Fellow Batman Christian Bale in a Costume Shop

Ben Affleck steps out of his car after arriving at his office on Friday (April 1) in Santa Monica, Calif.

The 43-year-old actor appeared on Conan recently and opened up about where he met fellow Batman actor Christian Bale.

Ben ran into Christian at a Halloween costume store!

“There’s this other guy in there, and I hear, ‘Aye, Ben, is that you?’” Ben said. “I turn around and look and it’s Christian Bale. And the first thing I thought was, ‘Christian Bale‘s British?!’”

Here is the advice that Christian gave him: “Look, mate, just make sure you’ve got a zipper in that suit. I couldn’t piss for three movies.”