Want to roll joints like a pro? Cannabis culture icon Seth Rogen has the perfect cannabis guide for you. 

"Rolling joints can look very easy," the 'Pineapple Express' star says at the beginning of the self-help clip titled 'Rolling with Rogen'. "But in actuality, it can be very difficult. And a lot of people have no fucking clue how to do this. I'm going to walk you through this as though you have never even attempted this in your entire life - just to make sure I don't leave anything out."

So whether you're new to rolling joints or you've struggled with putting pot-to-paper in the past, Rogen's idiot-proof tutorial will up your cannabis dexterity - if you keep at it.

"Truthfully, it'll take you around a hundred tries in order to get this down properly," Rogen warned. "But keep practicing, and you will be able to do it."

And if you're looking for an excuse to do some rolling reps, Rogen's 35th birthday is today. Spark a joint and watch 'This Is the End', 'Neighbors 2' or another one of Rogen's stoner comedies.