Tyson's just joking. He loves playing around. He's admitted on numerous occasions that he's never had a single bare-knuckle fight in his life. He comes from a family of great bare-knuckle fighters though. On his father's side of the family, there was Bartley Gorman and his brother, Sam. Bartley was said to be one of the greatest Bare-knuckle fighters of all time. And on his mothers side of the family, there was Uriah "Big Just" Burton, who reigned as the "King of the Gypsies" before Bartley proceeded him. Tyson's father, John, was also feared and respected in the travelling community, especially in the late 80's-early 90's.
Yes mexican heavyweights, yes, everything he sais looks really believable, yes... sure... and yesteday I saw a donkey flying, true story bro.