I'd rather have that than pinworm. It's rough seeing a little kid dragging their butt on the carpet like a dog crying...
Reproduction:
After mating, the male dies. The female migrates to the anus and emerges, usually during the night, to deposit about 10,000 to 20,000 eggs in the perianal area (around the anus). She then secretes a substance which causes a very strong itching sensation, inciting the host to scratch the area and thus transfer some of the eggs to the fingers. Eggs can also be transferred to cloth, toys, and the bathtub. Once ingested orally, the larvae hatch and migrate back to the intestine, growing to maturity in 30-45 days. The eggs can survive for 2 to 3 weeks on their own outside of the human body. In some cases, the larvae will hatch in the peri-anal area and travel back inside the anus, up the rectum, and back into the intestines where they mature.[1]
Or Loa loa filariasis, the parasite crawls through the surface of your eye, ewwwww....
If you are squeamish, never take a clinical microbiology course...