This is a true story. No, seriously.
In the university department where I used to study, we would have a department party before Christmas break, but both we and the department were perpetually short of funds, so it was potluck.
A friend of mine decided to prepare a dish for the party, but for some reason now lost in the midst of time, he only had access to a French cookbook. No problem, with his fine Oxford education, he figured he could use it.
He came across a recepe for Steak au Poivre, which looked like an intriguing one-pot meal, so he bought the ingredients, spent the afternoon in the kitchen, and produced his masterpiece at the party that evening.
The only problem was, as the rest of us pointed out, Steak au Poivre translates as Steak with Peppers, and he should have used green peppers. Instead, he had mistaken Poivre with Poire, or Pears, and had basically cooked up a big batch of Steak with Pears Stew.
The early attendees at the party amused themselves by watching the latecomers dish up what appeared to be a steak and potato stew, only to find the first bite unsettlingly ... sweet and pearish.
I don't think we allowed him to take part in the cooking ever again.