Is it normal to be a "know it all"?
I start sentences with "did you know..." a lot. It really isn't that I try to be a know it all, I just get really excited over weird stuff and feel compelled to share my knowledge with others. Stuff like how rats are ticklish, how some parasites can zombify certain invertabrates, how light is both a wave and a particle, and how dolphins really aren't so sweet and have been known to commit gang rape. I just can't help myself, I need to spread the information.