"Johnny Knoxville was 29 when Jackass hit MTV in 2000, and by then he'd already been dyeing his graying hair brown for a few years. His father had been 19 when

"Johnny Knoxville was 29 when Jackass hit MTV in 2000, and by then he'd already been dyeing his graying hair brown for a few years. His father had been 19 when his own head turned white, so Knoxville was prepared." Interesting!