(Cover) - EN Showbiz - Johnny Knoxville hates it when men approach him as they usually want to fight.

The star is best known for appearing in American TV show Jackass, which has also been adapted for the big screen. In it, Johnny and friends including Bam Margera and Steve-O complete daredevil stunts such as drinking vomit and swimming in sewage.

The group of men can regularly be seen inflicting injuries on each other to see how much pain they can take, and Johnny says this mistakenly makes people think he is superhumanly tough.

Guys want to challenge me to a fight, he admitted. It always confuses me. If you want to prove youre tough, go and fight someone who can fight. I cant fight. Youre not getting any street cred by beating me up.

Johnny gets his unusual sense of fun from his father Philip, who regularly used to pull pranks on his pals. Some of them are legendary among the family, and Johnny wishes he could think up jokes which are so funny.

He was something else. He would send letters to his friends from the VD clinic, Johnny laughed. It would say they had to list their sexual partners and come into the clinic. Some people bought it and took those letters to the health department. (C) Cover Media