Ribald teen romp "Superbad" triumphed at the box office this weekend, raking in $31.2 million despite an R rating and a modest budget under $20 million, reports Variety. It marks the seventh biggest opening for an R-rated comedy, edging out Judd Apatow's other summer hit, "Knocked Up," which opened in June and has earned $147 million to date.
"Superbad" beat out July chart-toppers "Rush Hour 3," "The Bourne Ultimatum," "The Simpsons Movie," and—at number five—$80 million sci-fi flick "Invasion," starring Nicole Kidman, which debuted at $6 million. Overall summer box office revenues are up 11% over last year. (More Judd Apatow stories.)