We all know how much Seth Rogen loves weed and we have also seen him smoke marijuana in some of his movies such as "Pineapple Express" and "This is The End". There are some actors who fake being stoners, but Rogen is proud to admit that he is indeed a pothead.

In an interview with Rolling Stones, the 31-year old actor explained: "I consider myself more of a pothead than a stoner." For those who don't know the difference between the two, Rogen gave out his own description of each kind of marijuana user.

He said, "A pothead has the connotation of being someone who just smokes a lot of pot and has stopped thinking about it." Rogen added, "For the first few years that people smoke weed, they're always trying to classify it and qualify it, 'Is this bad weed, is this good weed, what is it doing?'

The Canadian pothead revealed, "Then, eventually, it just is what it is, and I've been there for, like, 10 years. It's so stupid, but I don't think about it anymore." Smoking weed is more fun when you are joined by your buddies.

During Rogen's guest appearance on "Watch What Happens Live", Andy Cohen asked him who his stoner friends are. Pictures of celebs flashed on the screen and he had to admit if he had smoked weed with them or not. And boy, you will be surprised by Seth Rogen's list of weed smoking buddies and those who aren't.

When Paul Rudd's photo appeared, the comedian said: "Oh yeah, lots of times."

Next up was Sarah Silverman and Rogen exclaimed: "Yes, many times."

Snoop Dog was next on the list and the actor admitted: "Yeah, I actually have."

Next was "This is The End" co-star Jonah Hill and he said, "Yeah, a few times."

When Barbra Streisand's picture appeared, "The Guilt Trip" co-star admitted: "No, but we talked about it a lot. She smoked weed with Peter Sellers though. That's the craziest s*** ever!"

Most people think that his "Pineapple Express" co-star is his best stoner buddy. They are like the new generation of Cheech and Chong. Unfortunately, Rogen admitted, "This is really depressing for me to say... I've never smoked weed with...James Franco!" He added, "He doesn't smoke weed. That's why he's such a good actor! It's really sad, actually."

Now we all know that Seth Rogen was the only one who smoked real weed in the 2008 comedy, but Franco did an amazing job pretending to be high.