I took my teenage son to a preview; I squirmed with embarrassment for the first few minutes, but it turned out to be the funniest film either of us had seen since Borat. The plot is straightforward; three nerdy sex-obsessed schoolboys are on a mission to buy alcohol for a party. In that respect it's a dumb teen comedy like American Piebut it's much better, and in a peculiar way, more moral. Warning: lots of swearing, lots of kn*b gags, and some very crude dialogue, none of which I could repeat here. The two lead characters (Jonah Hill and Michael Cera) are great. So are Bill Hader and Seth Rogen  star of Knocked Up and the film's co-writer  who play immature, out-of-control policemen. Christopher Mintz-Plasse, as the lead characters' geeky sidekick McLovin', is best of the lot.