I can hear the prosecution now
Ladies and Gentlemen of the jury what you are seeing is not blood from Mr.Zimmerman’s nose, it is blow back from when he maliciously with fore thought shot poor Mr. Martin in cold blood.
And there you have it, folks. The irrefutable evidence that that thug Zimmerman viciously and cold-bloodedly assaulted sweet young Trayvon’s fist with his face.
That would also explain the terrible wounds inflicted on dear Trayvon’s delicate hands.
(Do I really need a sarcasm tag here?)