So, this guy has a STRONG desire to eat a human being. So he advertises for someone. Surprisingly, someone answers the ad.

They can tell it better than I can:

"On the evening of March 9, the two men went up to the bedroom in Meiwes' rambling timbered farmhouse. Mr Brandes swallowed 20 sleeping tablets and half a bottle of schnapps before Meiwes cut off Brandes' penis, with his agreement, and fried it for both of them to eat.

Brandes - by this stage bleeding heavily - then took a bath, while Meiwes read a Star Trek novel.

In the early hours of the morning, he finished off his victim by stabbing him in the neck with a large kitchen knife, kissing him first.

The cannibal then chopped Mr Brandes into pieces and put several bits of him in his freezer, next to a takeaway pizza, and buried the skull in his garden."

https://www.theguardian.com/world/2003/dec/04/germany.lukeharding