I just bleed internally. No, seriously, I bruise more easily than just about anyone I know. I can brush past a doorknob, and will end up with a fist-size purple bruise on my hip.
So, after clearing up a bunch of de-construction debris a couple weeks ago, my arms were so bruised, I looked like I was a heroin junky.
As for actual, red, liquid, external bleeding, good question. I can't rightly recall. I don't really do too much to cause injuries like that anymore.