Alexander Yusko was a fairly popular rapper in his home country of Russia, spitting under the name Andy Cartwright.

Things went left when his wife Marina Kohkal caught him cheating with a fan.

So left that Kohkal chopped him up with a hacksaw and fed to the rats -- while he was still alive.

Kohkal has long conceded that Yusko died and rats ate him.  But she claimed that he had ODed, and she disposed of his body that way because she didn't want his fans to know his cause of death

However, she is being charged with his murder, as the authorities believe she knocked him out with insulin and then went to town.

The authorities have also said she drank his blood and had sex with his corpse.

The case is ongoing.

Russia is no joke.