Been around since before "Iron" Mike was put in a cage.
Here's a similarly un-PC joke.
One night after the big fight Mike Tyson was a bit depressed so he decided to get a prostitute to cheer him up. After the act, they were laying in bed having a smoke. The prostitute said, "Well Mike, how's it all going?""How's it all going?" he asked. "My life's a disaster. I was born to an under-privileged family, had a hard up-bringing, was thrown in jail for rape, now I'm on parole and I've hit a cop, my wife left me for beating her up, I have to pay maintenance for my kids, I've lost two world title fights, I've disgraced myself and my sport, most people want me banned me for life and they won't pay me my money. Nothing could make my life any worse."
"Oh, that's so sad," the prostitute said. "I'll say one thing to cheer you up. You're a much better lover than Magic Johnson...!"