Think my biggest eureka moment came during my time as a veterinarian student. We were practicing finding cows ovaries to decide where they were in their cycle. The poor cow had to patiently stand there while I sweated and fumbled with my arm up its ar**, and I had no idea how the bleedin' ovaries where supposed to feel like. Felt to me like I had my arm stuck up a warm, soft airhangar...
Then finally I found the one on the left, and I have never in my life been so glad to feel a small, round "ball" slip into my fingers
There were no public health laws in Ankh-Morpork. It would be like installing smoke detectors in Hell.
- Feet of clay.