Big Daddy is a 1999 American comedy film directed by Dennis Dugan and written by Steve Franks, Tim Herlihy and Adam Sandler based on a story by Franks. It stars Sandler, Joey Lauren Adams, Jon Stewart, Rob Schneider, Dylan and Cole Sprouse and Leslie Mann. The plot follows Sonny Koufax, a 32-year-old man who gets dumped by his girlfriend for not accepting responsibility. Sonny then tries to be responsible by adopting a five-year-old boy named Julian who appears on his doorstep.


In New York City, Sonny Koufax is a 32-year-old slacker and law school graduate who hasn't taken the bar exam, works one day a week as a toll booth attendant, and lives off a $200,000 compensation from a minor accident. His girlfriend Vanessa threatens to break up with him unless he takes more responsibility. His roommate Kevin Gerrity proposes to his podiatrist girlfriend Corinne Maloney before he leaves for China to work on a case for his law firm, and she accepts. Corinne vehemently dislikes Sonny because he constantly teases her about her former job at Hooters.