Cheech and Chong, where can you go wrong with one of their films? Well apparently you can go wrong by making this film. It is almost your average run of the mill C&C movie, the problem is that it seems like it was just rushed out as quick as the studio could push it. My guess is that the studio probably had a contract with them to make a certain number of movies, and this was the last one they needed to produce so they just forced it out. Unfortunately its not as funny as their other movies, and it really lacks some of the subtleties that they have had previously.
Go rent or buy Up in Smoke instead, you'll probably enjoy it a lot more.