RU

These two magic letters stand for Rektaluntersuchung, or in better German: Transrektalepalpation. Translate : Rectal exploration.
That's the Germans favourite part of the examination! Every time we have an animal in the quote, it doesn't matter what disease it is thought he has, wether it is in the eye, the leg or the mouth, they always end up sticking their hand up the ass of the poor thing!