50 Cent leveled a pretty crazy charge against Floyd Mayweather during his Young Money Radio interview with Lil Wayne.

50 Cent has an interesting history with Mike Tyson.  He notoriously bought the champ's Connecticut estate and the guy who notoriously shot Fif all those times was part of Iron Mike's camp.

According to 50, Mayweather has an even more interesting history with Tyson.  [Jump to 20 minutes.]

"Mike Tyson can't stand Floyd Mayweather ... the first time Mike Tyson had a rape charge, Floyd was paying for that b*tch's lawyer.  He was paying for a girl to say Mike Tyson raped her," he claimed to a skeptical Wayne. "It hurt him to watch Mike when he was the n*gga, and he had the money.  When the girl claimed that Mike raped her, Mike ran into the girl and she changed her mind ... but this n*gga [Floyd] paid to create confusion because he was jealous of him."

Part of what 50 is saying is very confusing.  When Tyson was first charged with rape -- and ended up doing time on the charge -- it was 1991 and Floyd was 14.

So we don't think 50 really means the first time.  But rather a later, unknown to the public, time.

Which just makes Floyd's move that much more grimy.  (If it's true.)