When jumping from building to building I did not notice some edge metal... OUCH!
I think you should tattoo a zipper over that little nasty.
Ya- My wife thought I should have gotten stitches... Maybe she was right, I now may have a serious scar I could be proud of.
I had a laborer that had a similar wound. Only he got his when he put a hook knife in his pocket then went into the pora-potty. When he pulled up his pants the hook snagged he calf and 18 stitches latter he had a scare to be proud of.
Yuk. Yuk. Pretty nasty. Make sure you put something on it regularly to prevent infection. Galvanized 4 x 4 wall flashing is even worse.