Two iconic cannabis experts offer some necessary advice for your first introduction to marijuana.

Smoking cannabis for the first time could make anyone wary. You’re not sure if your experience will be full of pure euphoria, or if your smoke session will end in dreaded paranoia. (If that latter happens to you, eat black pepper!) Either way, everyone could use some coaching through their introduction to cannabis.

Luckily, two of the world’s leading experts on smoking weed have some advice. That would be Seth Rogen and Snoop Dogg. Radio legend Howard Stern recently asked Snoop and Rogen what they’d tell someone smoking with them for the first time. A 39-year-old producer on Stern’s show was planning on trying it, and Stern thought limiting yourself to three hits your first time was sound advice.

But Rogen and Snoop disagreed.

“I’d start with one,” Rogen said

“I’d say a half of one,” Snoop argued.

“Exactly,” Rogen said. “This is from two guys who have had too many mother****ers come up and get way too high.”

“And fall out,” Snoop said. “I got a lot of people [who come up and say], ‘My dream is to smoke with you.’ Bang,” he added, pantomiming someone falling asleep on the couch. “He dying and I’m gone.”

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But the two celebrities also discussed what kind of cannabis newbies should try first. Snoop suggested a sativa strain of marijuana, “because it’s a little bit lighter and it’s more of an introduction.” But Rogen added that you should make sure it has a decent percentage of THC in it “to make sure you actually feel something because you might not.”

“But again, one f***ing hit,” Rogen emphasized.

Snoop did offer this warning, though: Once you try marijuana, your life will never be the same. Of course he meant it in a positive sense.

“When you smoke this weed, everything is gonna change,” Snoop said. “Your fee for appearances is gonna change, your style of women is gonna change, your hair is gonna get longer.”

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That said, Seth Rogen has been expanding his cannabis empire in recent months. Rogen and his creative partner Evan Goldberg teamed with Canopy Growth to create Houseplant—a marijuana company that will educate and “make it easier for people to learn to love cannabis.” Last month, Rogen also hosted an adults-only, marijuana-centric carnival to raise money and awareness around Alzheimer’s disease.