It had it's moments.
It wasn't a bad film, just didn't have me laughing all that often because it was predictable and most of the sophmoric jokes they used were worn out long before the film was ever made.
Jay and Silent Bob characters have a relatively unique combination of zaniness, very deep/inside referances that most people don't catch, physical comedy, slapstick, sometimes sophmoric and all rolled up unpredictability. Some of their jokes/routines have punchlines or the equivalent for the physical comedy, sometimes they don't.