Hawke and his "Dead Poets Society" co-star Josh Charles reunited in Swift's video for "Fortnight," the first single off "The Tortured Poet's Department."

Hawke shared how he ended up in the “Fortnight” music video while guesting on a segment of The Late Show With Stephen Colbert. Ever since making the 1989 movie, alongside the late Robin Williams, he and Josh Charles have been friends for life. It sounds like they had an absolute blast together on the set of the video. As he continued:

Taylor Swift runs a tight ship. Following their surprise Dead Poets Society mini-reunion in the pop star and Post Malone's "Fortnight" music video in April, both Ethan Hawke and Josh Charles opened up in separate interviews about keeping their cameos a total secret from everyone - including their kids.

Ethan Hawke’s teenage daughters were apparently less than impressed that he appeared in Taylor Swift’s music video for “Fortnight.”

Ethan Hawke's kids aren't happy with their dad! During his appearance on 'The Late Show with Stephen Colbert,' the actor talked about his surprise cameo in Taylor Swift's 'Fortnight' music video and shared why his two daughters had 'profound disappointment' when they found out about it.

On 'The Late Show with Stephen Colbert,' Ethan Hawke talked about starring in Taylor Swift’s “Fortnight” music video alongside his longtime friend and former 'Dead Poets Society' costar Josh Charles.

Ethan Hawke is providing some insight into what it's actually like to work with music superstar Taylor Swift. Hawke, 53, got to witness Swift's creative process firsthand while working on the music video for her newest single,