Can you give me a superstitiousbilief that is debetable?

Basically all superstitious beliefs are debatable. Superstitious beliefs are beliefs, often about some cause-and-effect relation, that has no basic in logic (there is no scientific reason to believe that a certain cause would have a certain effect). Specific examples of superstitious beliefs include:

• The belief that the position of the planets can help you foretell the future, or influence your character (Astrology; horoscopes).
• The belief that seeing or doing things will bring you "bad luck".