Plot: Morons pull pranks and perform stunts, mostly to entertain themselves, it seems.
You know you're in good shape when somebody says, "We have rectal bleeding," within the first ten minutes of the movie. Several chapters involving horse semen, malfunctioning rockets, launched shopping carts, fecal matter, the exposed testicles of the elderly, beer enemas, puking, bull attacks, flying wee men, pubic beards, and death-defying moments later, I had laughed quite a few times and even laughed until tears came once. I should probably feel a little guilty for liking this as much as I did, but I refuse. The mayhem is faster, funnier, and more dangerous than the stuff they did in the first movie (or on the television show, of course), and the beginning scene and ending musical number that bookend the body of this are really well executed. That closing musical number even pays tribute to Hollywood musicals and even Buster Keaton. I was reminded of Keaton quite a bit while watching Jackass Number Two actually. No, I've not yet found the movie in which Keaton's ass or testicles are displayed. With a lot of the stunts, you get exactly what you think you'll get (bike with a rocket being shot into a lake) but there are a lot of set-ups that take the stunt one unexpected step further, giving the audience a second unanticipated punchline. Does all of it work? No. Some of this is hard to watch and not really all that entertaining. But when this hits, it's home run after home run. Brilliant stuff! My favorite scene? Likely the extended terrorist bit near the end.
By the way, watching this made me realize what Tillie's Punctured Romance from 1914 was missing. If the kicking in Tillie's Puncture Romance would have been in the groin instead of directed at the backside, I think it would be considered one of the most influential and uproariously funny comedies of the early 20th century.