Here’s a line that I’m willing to bet has never been used before in a movie—that may in fact never have been uttered by any human being in history: “You used my leg for a tampon!” If it is ever spoken again, it will certainly be by someone quoting Superbad, a movie that could make Quentin Tarantino blush. It was written by Seth Rogan, who, as a collaborator on The 40-Year-Old Virgin and Knocked Up, has raised the bar for floridly obscene guy-alogue to previously undreamt of levels. (Whether those levels be heights or depths is another argument.) Rogan and his writing partner Evan Goldberg began their script a decade ago when they were both 14-year-olds, and whatever polish it may have received since then has done nothing to mitigate the unstoppable obsession with sex and the seeming impossibility of getting it that has driven male adolescents since the dawn of time. (The degree to which the extravagant drawings of penises that accompany the end credits of the movie are either a celebration or self-parody of these obsessions is another area open to discussion.) Superbad takes place on one particularly eventful night in the senior year of best friends Evan (Michael Cera, Arrested Development’s George Michael) and Seth (Jonah Hill, who has had memorable supporting parts in producer Judd Apatow’s other films). Nerds of differing stripes—Evan is brainier and shyer, Seth is bulkier and brasher, though no less desperate or ill-informed about the opposite sex—their life-long dependence on each other will soon be tested when they separate for college. If they actually had any experience of the sexual exploits they talk about, they would be unbearable: It’s the combination of their innocence and frustration that makes us able to laugh at and eventually with them. (That won’t be much comfort to the parents of teenaged girls, who will need to assure themselves that neither their daughters nor the young men chasing after them think or talk anything like these characters.) Though there’s an essential sweetness to the relationship between Jonah and Evan that comes out by the end of Superbad, that’s the only redeeming social value for a movie that luxuriates in raunchy dialogue and slapstick situations, some involving Rogan and Saturday Night Live’s Bill Hader as a pair of cops who aren’t much more mature than our heroes. It’s very funny stuff, but after three movies of this sort of thing, I hope that Rogan has some other tricks up his sleeve—it would be a shame if he were to burn out before he hits 30.