Don't have a cable stripper handy?
No need to go buy one!
All you need is a clothespin...
...and a pencil sharpener blade.
You do not believe me ? Look it's very simple:
1. Unscrew the sharpener blade with a screwdriver.
2. Place the blade on the tip of the clothespin.
3. Screw the blade onto the clothespin.
4. Pass the cable through the hole in the clothespin.
5. Twist the clothespin around the cable until it is stripped.
There you go, you stripped the cable easily with a clothespin :-)
You don't even need to buy a wire stripper. Handy, isn't it?