What does it mean when you are bi-polar?

To be bi-polar simply means to have mood swings, something like a pendulum. A pendulum moves from one extreme to the other in a swinging motion. Consequently, bi-polar works by the same principle. You may be extremely jubilant and energetic for a period of time. The other extreme is you may fall into a sad or depressed mood for a period of time. Not unlike a yo-yo, up and down. It was also known as manic-depressive disorder. Manic when 'high' and depressive when low.
Bipolar describes a disorder characterized by both manic and depressive episodes.