Someone shared ZW (Zimbabwe) News article on Facebook. I don't believe it is true.
According to the story, three brothers in Limpopo, South Africa attempted to rape a crocodile after being told it would improve their sex lives, but were killed by it.
The quest to become bedroom warriors turned into a tragedy after a Limpopo family lost three sons in a crocodile attack. A family known for its bedroom curse of failing to perform when it matters most (during intercourse) fell in deadly jaws of the strongest reptile after a Sangoma gave them muthi and instructed them to go and rape a female crocodile.
A search for the story shows a few sources but they appear to be all pretty much copy & pastes of each other (suggesting just one source). The image has a play button superimposed on it, even though it isn't a video makes it even less credible.
But none of the links were to a debunking site like snopes.com. Also the link above also seems to report "straight" seeming news.