When Bruce Willis made his first appearance on "The Late Show" with host Stephen Colbert, the last thing that fans were expecting was for the action star and the host to square off in a fight. But that is exactly what they got.

According to Deadline, the action star, who is famous for his "Die Hard" series of films and many others that started in the '80s and have been going ever since, came on the show and proclaimed that he has always done his own stunts in the movies. He added that even at 60-years-old, he still does his own stunts.

Colbert made a playful joke out of that and also called him out on it, saying he did not believe him.

That is when the segment got confrontational, and it wasn't until the two confronted each other standing up that the fans watching realized that it was all staged. The two seemed to start fighting with quick jump scenes that featured cuts of the two being replaced by stunt doubles.

The double that replaced Willis on the show look suspiciously like Dr. Phil but doubtfully so. The segment culminated in a series of action sequences with the two squaring off in a fight, which undoubtedly featured staged, or even pre-taped, sequences of action style violence.

There were also a few lines thrown in the mix that Willis is so famous for in his movies. The first line though, he stole it straight out of the film "Gladiator."

"Are you not entertained?" Willis said to the live studio audience, referencing back to Russell Crowe's line in the film.

But perhaps his best ripoff was from his own movie, just before he jumped off the balcony.

"Yippee ki-yay, William Faulker," Willis said, obviously changing it for a TV edit.

In the end, Willis concluded by admitting that he used stunt doubles for his films and he was actually there to promote his stage show, "Misery."

Watch the video below.