Do people with Bipolar Disorder sometimes lie for no good reason?

I think my dad has Bipolar Disorder, because he says and does a lot of things that don”t make a whole lot of [logical] sense. At the rate he is going with his [stupidity] I don’t know what I will do about him when he is old and decrepit. For example, sometimes he is a [...] http://bit.ly/ngkcLR