I found this link very informative. There is a lot more to these specific weird beliefs, but these statements seem to encapsulate the essence of them very well. And you thought Mormonism was the weirdest of them all. Oh no. They are in league with some of the biggest and finest. #20 is my favorite.

The first ten
How many of them can you match up with a familiar religious tradition? (The answers are at the bottom.)

1. The foreskin of [a holy one] may lie safeguarded in reliquaries made of gold and crystal and inlayed with gems--or it may have ascended into the heavens all by itself. (2)

2. A race of giants once roamed the earth, the result of women and demi-gods interbreeding. (1, 6). They lived at the same time as fire breathing dragons. (1)

3. Evil spirits can take control of pigs. (1)

4. A talking donkey scolded a prophet. (1, 3)

5. A righteous man can control his wife’s access to eternal paradise. (6)

6. Brown skin is a punishment for disobeying God. (6)

7. A prophet once traveled between two cities on a miniature flying horse with the face of a woman and the tail of a peacock. (4)

8. [The Holy One] forbids a cat or dog receiving a blood transfusion and forbids blood meal being used as garden fertilizer. (7)

9. Sacred underwear protects believers from spiritual contamination and, according to some adherents, from fire and speeding bullets (6)

10. When certain rites are performed beforehand, bread turns into human flesh after it is swallowed. (2)


https://www.alternet.org/belief/20-weirdest-religious-beliefs