A source close to the situation explained:
We all know what a pot icon Seth Rogen is! You'd think it would be easy to play a marijuana dispensary clerk!
Well, not when you can't use your hands!
Ch-ch-check out the video (above) to see another exciting edition of Jimmy Fallon's messy sketch Real People, Fake Arms!
These guys may not be able to get high, but they sure are HIGHlarious!