大便有野！

The 白色野 can normal to all of us - when we defecate (大便), there is usually a small amount of white/yellowish mucus that is made by the colon.

The white mucus can also be a sign of "激躁性結腸症" (especially with stomach pain) or "潰瘍性大腸炎" (especially with bloody stool or diarrhea). It can also be anal fissure (肛裂). In these cases you should go check with your doctor.

The 精液 explanation is non-sense.

因精液過多, 由精囊流左入了直腸, 順勢在肛門排出。請不用太擔心, 應該不大問題的!

盡快到醫院專科或向專科醫生求診!