5 Things You Don't Know About Johnny Knoxville

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Known for his outrageous stunt series Jackass, he just debuted his latest comedy starring one of that franchise's most popular characters -- 86-year-old naughty grandpa Irving Zisman. Here are five things you probably don't know about Johnny Knoxville.

1. Born Philip John Clapp on March 11, 1971 in Knoxville, TN -- his mother was a Sunday School teacher and his father worked as a car and tire salesman.

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2. Says he first caught the acting bug after being given a copy of Jack Kerouac's novel On the Road by his cousin, singer-songwriter Roger Alan Wade.

3. Was offered the role of Phil Kaufman in the 2003 comedy Grand Theft Parsons after Hugh Jackman dropped out of the project.

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4. Was knocked unconscious three times during making of2002's Jackass: The Movie.

5. Was detained at LAX airport in January 2009 after security screeners spotted a suspicious looking, grenade-shaped device in one of his bags. Airport authorities later learned that the item was a prop from a commercial photo shoot.

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