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LOS ANGELES (AP) _ Johnny Knoxville is thrilled his crude prank movie ``Jackass'' debuted at No. 1 at the box office. He's also a tad sheepish about all the success.

``Oh, my goodness, when I think of all those filmmakers who spent so much time and tens of millions of dollars on their movies _ and our stinker was No. 1? ... That's so wrong,'' he says in Newsweek's Nov. 11 issue.

Produced for just $5 million, ``Jackass'' reprises the now-defunct MTV show that featured such hazardous or crude acts as roller-skating with bottle rockets attached or urinating on a snow cone.

Executives at Paramount and its MTV subsidiary had expected ``Jackass'' might gross $20 million at best on its first weekend. It raked in $22.7 million.