I bruise really easily too. One time I was walking over the baby gate and Milo walked up to it at the same time so I moved so that I didn't step on him and I ended up just hitting my leg on it. Well I had 2 HUGE bruises on my leg. I thought that it was dirt or something that somehow got there so I started to try to wash it and then it hurt.
I have a permanent bruise on my stomach from a concert I went to a few years ago. Its definitly not small either. I keep forgetting its there and I will look in the mirror and be like where did that come from?