I had thirty minutes or less to write this review, so here we go.
A fine genre known as the stoner comedy has emerged recently, due to the rise of Judd Apatow and actor Seth Rogen. We've seen it in films like Pineapple Express and Harold and Kumar. It often refers to the fact that the film heavily features pot, but I tend to think it's more descriptive of the films' sense of humor. In this, the film feels like it's written for younger audiences with a sense of humor that, well, you may have to be stoned to get. With that in mind, 30 Minutes or Less probably fits the bill just fine.