The fun-loving stuntman showed up to Mike's party in the Hollywood Hills uninvited, but The Hangover star agreed to let him in after learning he had cocaine with him. According to the 41-year-old, the pair ended up having a deep conversation about racism in America while high.

"At that time in my life I would develop Tourette's syndrome if I was f**ked up enough, just blurting out inappropriate s**t," Steve-O tells GQ Magazine. "So I said to him, my exact words, 'You know, Mike, I don't have a racist bone in my body, but I like to consider myself a n**ger'. I'll never forget, he said, 'You ask me, the definition of that word is anybody who uses it!' And I was like, 'Damn! Iron Mike, deep as f**k!'

"We're talking about the finer points of racism in America, or whatever, just sort of philosophising about how to make the world a better place, and it was just f**king incredible, man. The last thing he said to me was, 'You know, Steve, everybody's got you wrong. You're actually really smart'. And the next time I spent real time with Mike Tyson, one-on-one conversing, was when we were locked up in the psychiatric ward together."

Steve-O did not elaborate on the psych ward situation, but reveals he tried to convince the former heavyweight champ to participate in one of his stunts.

"I was talking him into holding out his fist with his elbow locked and letting me run into it with my face to try to give myself a black eye," he explains. "I was trying to talk him into filming that with me when we got out. But I couldn't talk him into it."

"Then came the Comedy Central Roast with Charlie Sheen and we talked Mike into doing the thing and holding his fist out, and I dove into Mike Tyson's fist and landed on it with nothing but my nose," he adds. "Super broke my nose. Like really crazy broke it."

Steve-O has been sober for eight years following an intervention led by Jackass leader Johnny Knoxville, but he reveals he knew he hit rock bottom when he showed up to his drug dealer's house unannounced and ended up snorting cocaine laced with blood.

"When he wouldn't pick up his phone, I would just show up at his house because I was so desperate for drugs," he says. "This guy would shoot up coke. People who shoot up cocaine, for some reason their needles squirt blood all over the f**king walls, the ceiling, there's just blood squirted everywhere..."

"He had his table where he weighed out all of his f**king drugs, and there's cocaine right on the table, but of course, there's also blood droplets, blood encrusted all over the f**king place too," he continues. "I struggle to believe how I got to a place where I'm in this f**king drug dealer's place scraping s**t off this table, which had visible f**king blood mixed in... I was snorting up dried blood.

"That's probably the lowest point I can recall."