Brad Pitt was an ‘artist’ with marijuana before he ditched his smoking habit to become a father

He’s better known for his movie career and famous brood, but Brad Pitt says he was once an “artist” when it came to marijuana.

“I certainly had my day,” the father of six told HBO‘s “Real Time” host Bill Maher in an interview Friday.

Maher, who said the actor’s portrayal of a pot smoker in 1993′s “True Romance” was “one of the great stoner performances,” also told a story in which he witnessed Pitt rolling “the most perfect” joint he had ever seen at a New Year’s Eve party.

“I’m an artist,” the actor brazenly responded.

Though the “Inglourious Basterds” star had fun during his earlier days, the actor admits he ditched the habit when he became a father to his six kids – Maddox, 7, Pax, 5, Zahara, 4, Shiloh, 3, and twins Knox and Vivienne, 1 – with partner Angelina Jolie.

“I’m a dad now,” he explains. “You want to be alert and my eyes used to glaze over when I did that.”

Pitt’s penchant for pot also began to affect his acting career.

“I liked to smoke a bit of grass at the time, and I became very sheltered. Then I got bored,” Pitt told Parade magazine. “I was turning into a damn doughnut, really. So I moved as far away from that as I could. I was done.”

Called plainly “Cannabis,” a new $1.99 application for Apple’s iPhone and iPod Touch lets you find medical marijuana in the 13 states that have such laws, and lawyers in the 37 others that don’t.

For overseas users, it also guides you to the friendliest Amsterdam hash bars.

The app is the creation of AJNAG, or Activists Justifying the Natural Agriculture of Ganja, a Los Angeles-based online group created in 2006 to “connect, educate and empower individuals on the cultural, economic, and medicinal benefits of legalization, production, regulation, distribution, and taxation of Cannabis sativa,” according to the group’s Web site.

Jonesin’ for some (legal) weed? Yes, there IS an app for that.

AJNAG says it’ll donate 50 cents for every purchase of the “Cannabis” app to an as-yet nonexistent “cannabis non-profit reform fund, which will be set up once the application reaches 1000 subscriptions.”

“Our goal is to put the power of cannabis change in your pocket while you enjoy the most sticky and potent iPhone application available!,” the Web-based brochure claimed.

Requests to Apple seeking comment were not immediately returned.