That was definitely NOT a stupid question, but a very important one!
Males usually clean themselves regularly.
Normally, if one is left out of the sheath, it is due to a hair ring, but could also be from an injury.
Both can kill if not taken care of properly ... by the chin, by you and/or a qualified vet.
The part of the penis that stays inside the sheath has to stay moist or it can become easily infected.
If the circulation is cut off, by a hair ring, it will become swollen, become pink/red, then turn blue or black and become badly infected.
Now, with the
injury part, sometimes it can result in pronies, which is a big problem. There is loss of control of the urine and they dribble constantly. It takes lots of care and attention for the rest of it's life when this occurs. Urine will stain the fur, irritate the skin, set up infections. The penis itself has to be kept lubricated constantly.
I had one this happened to and it was very painful for him. It happened during mating. We finally had to let him go to sleep to keep him from suffering so much.
Jo Ann