Bloody eye
I've never managed to bleed profusely in any really interesting fashion, but I did have a blood vessel in my right eye burst and turn the sclera a grim and ugly red.

I was seven or something at the time, so I used it to thoroughly freak the hell out of the rest of the primary school. (Walk around with said eye closed, when someone asks why, open it with an evil grin and step closer. Worked like a charm)

Basically it happened when I was listening to The Lion King on one of those old school tape recorders using headphones.
My lovely twin sister, bless her, decides she wants to listen to something else and I refuse.
She retaliates by yanking the power cord of the tape recorder so hard it flies out of the socket, describes a startling curve through the air, ending with the plug prong-first in my eye.

Cue blood.

Worse than that though, and something I can (thankfully) only half-remember, was the method of draining the blood out of my eye. It involved a small needle.
Needle.
Eyeball.
*shudders*

Still have a little patch of permanent-bloodshottedness in my eye, looking at it...
(Sundayturkey has the biggest mug of tea, Thu 7 Aug 2008, 17:30, Reply)