Steve-O was 23 in Palmer's Pick Up when he played the character 'clown (uncredited)'.
That was over 25 years ago in 1999.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 49, and has starred in 64 movies in total, 59 of those since Palmer's Pick Up was released.
In Palmer's Pick Up, I think Steve-O looks: