Zach Galifianakis On Letterman: Water Prank Leads To Paul Shaffer Suit Mishap (VIDEO)

WATCH: Zach's 'Late Show' Fashion Faux-Pas

In addition to interviewing Jimmy Fallon on "Late Night" on Wednesday, Zach Galifianakis had an equally eventful appearance on "The Late Show With David Letterman."

In fact, this just might be a first in all of "Late Show" history.

Although he was there to promote his upcoming election movie with Will Ferrell, "The Campaign," Zach's interview was hardly as exciting as his fashion emergency involving "Late Show" band leader Paul Shaffer.

After getting in the way of Letterman's hot weather water prank (you can watch that below), Zach was forced to change into his back-up suit: a dapper, pastel yellow get-up with tiny, matching sunglasses. Sound like anyone you know?

ALSO WATCH: Letterman's water prank

Before You Go

Will Ferrell & Zach Galifianakis Promote 'The Campaign'

Will Ferrell & Zach Galifianakis Promote 'The Campaign'

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