Definitely DATED, this film has 70s "High Times" written all over it. These guys have not much more than "pot" on their brain. All jokes lead to the same subject...dope, man!
Cheech and Chong, already celebrated novelty song artists with several best-selling albums to their credit just had to take their "message" to the next level. "Up In Smoke" gave them plenty of exposure and secured a solid fandom. 25 years later, though, the laughs drop drastically on the dime-bag-scale.
When I was still in high school (and I didn't give in to the smoking of anything, then or now), I may have enjoyed this sort of nonsense more. As a middle aged intellectual, I can offer only a few tired smirks. Give me Laurel & Hardy instead!**