Rocky Mountain oysters are made from sheep's testicles not a horses. And they are typically deep fried.
Rocky Mountain Oysters - Bull testicles
They are the testicles of cattle or sheep.
Sheep 'balls" are called testicles; as are bovine "balls" and human "balls". "Balls" of the bovine persuasion, when prepared and cooked, are called Rocky Mountain Oysters, and sheep testicles are called "Shearer's oysters".
Try Rocky-Mountain Oysters! If you have any minors viewing this question, cover their eyes. Are they covered? Ok. Rocky-Mountain oysters are Sheep Testicles. Don't worry, they aren't raw. They are deep-fried. Here's what they look like...
Rocky Mountain Oysters - 2011 was released on: USA: 1 July 2011 (internet)
I believe it is Rocky Mountain Oysters.
The Rocky Mountain Horse comes from the Rocky Mountains in the USA.
Rocky Mountain Oysters - 2011 Terminal 2-3 was released on: USA: 27 November 2012
Rocky Mountain Oysters - 2011 Jailbird 3-1 was released on: USA: 26 November 2013
football and rocky mountain oysters
Rocky Mountain Oysters - 2011 Por Flavor 2-2 was released on: USA: 14 November 2012
Rocky Mountain Oysters - 2011 Nose Blows 1-5 was released on: USA: 5 November 2011