I am quite strange, compared to others. There's a very strong streak of eccentricity on my mother's side of the family. Bipolar comes courtesy of my father's side.

I voted that it relates to my BP. But I should explain that I see the BP as a side effect of eccentricity, not the other way around. There are plenty of people in our family who are mad as hatters with a propensity to wear hand-knitted multicoloured scarves without being BP.