Arnold Schwarzenegger is going back to his roots by launching a new exercise movement called "Come with Me If You Want to Lift," which puns on the most famous line from "The Terminator" franchise after "I'll be back." To promote his new venture, he has released a series of retro shirts:

Not bad, but our favorite Schwarzenegger shirt has to be the infamous crewneck tee with the caption "ARNOLD IS NUMERO UNO," which the former governor wore while smoking a joint and singing happy birthday to Lou Ferrigno - the original "Incredible Hulk."

The incident is from the 1977 docudrama "Pumping Iron," which offered a fictionalized account of Schwarzenegger preparing to defend his title as Mr. Olympia against Ferrigno and other bodybuilders. Schwarzenegger claims that much of the material in the movie - including his characterization as a cocky champ - was exaggerated to draw interest from audiences.

So was the joint fake as well? Nope. "I did smoke a joint and I did inhale," Schwarzenegger told CBS in 2002 to promote the film's 25th anniversary.

"The bottom line is that's what it was in the '70s, that's what I did. I have never touched it since."

But he insisted that the scene stayed in the rereleased version of the film.

"I would refuse to wipe out that record or change it or alter it because of image's sake," he said. "That would not be true to the filmmaker."

Check out the full scene below:

banner image: Shutterstock / Frederic Legrand