The only way to do it safely is a wire stripper. If you're extremely careful, you can do it with wire cutters, but I don't recommend it as it is easy to screw up. Some needle nose pliers also have a small part down at the bottom thats like a mini wire cutter you can use to strip, but again, you have to be very careful as they can cut easily.
I've always used my teeth to strip wires, but I don't really know what your mouth looks like, so I don't quite know if thats a good idea.
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You look at too much porn and have unfortunatley contracted an e-STD
Seriously, anything that cuts. I use one of those nail clipper keychains.
Fender Japan Stratocaster Ibanez Pro540 Power Ibanez Pro540 Saber Ibanez 430S Ibanez S540 Charvel LSXIII w/GraphTech Ghost MIDI Parker Fly Artist Ibanez S1220 Mesa F30 Roland GR20 Roland Microcube + IBANEZ TREMS STILL SUCK!
Teeth has always worked well when the strippers can't be found... =\
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