Lowest planet in my chart is my Mars, located in my 4th house and about 8 degrees from the Nadir.
They say that the 4th house is the most private, most hidden part of yourself, and I find that to be very true. On the surface I am quite harmless due to my Pisces ascendant, however in private (such as when I am at home arguing with people on online forums), I am quite aggressive and argumentative (Martian traits). My public and private selves are so different that people have a hard time believing the things I say and do, in private v in public.