prairie oyster 
noun
1A drink made with a raw egg and seasoning, drunk as a cure for a hangover.Finally, there are eggs - another favourite ‘cure’ be it in the form of a fried breakfast, omelettes or a ‘prairie oyster’, a drink containing an egg yolk.
2 (prairie oysters) chiefly North American The testicles of a calf cooked and served as food.Sandy from Calgary (visited during the Stampede) has the balls to suggest a quick stop at a certain café for a feed of prairie oysters (bull testicles)....
- Calgary can offer steak rounded out with prairie oysters and washed down with a red-eye, but old New Orleans can rustle up a much bigger spread of crawfish, jambalaya and ribs.
- Cross-referenced and linked, with plenty of supplemental and anecdotal information, Ray includes everything from the process of getting prairie oysters (it takes balls) to recipes for traditional Mexican insect dishes.