1. You want party-goers to think your costume is cool.
2. You want to trick zombies so they don't eat you.
You will need:
A glue stick
A narrow thing that could penetrate skin
Enough extra skin to make a fold (on a part of your body that you can show people)
You can achieve this effect with just about any narrow object. I used wires and skewers. You could try screwdrivers, shards of wood, scissors, knitting needles, spikes, sticks... surprise me.
It's as simple as applying glue to your skin, letting it dry until tacky, applying the object and pinching the skin shut.
Hold the skin pinched until the glue dries. This seems like it would be painful but it isn't... nearly as painful as actual impaling. The kiddos didn't mind at all.
Next step has all the good pics. Click next.
I've always wanted my own zombie, but not one of those run-of-the-mill zombies you can pick up during any old apocalypse. No, I wanted my own homegrown zombie. So I went down to my local black magic practitioner's store and bought me some organic zombie seeds. A few months of tender care later I had my own zombie! This is fun, easy to make, and great for Halloween. 
For the Zombie: