Ok, so I thought this whole "stab yourself with a rock" thing was a bunch of BS. BUT, I just tried it and it works great! Usually when I have sex, my girlfriend will wake up, but not with this method! She is still sleeping like the baby that I won't be having. Only thing is, if your anxious to get down to business, sharpening a rock can really be a drag. Think of opening a condom in the dark times ten. I suggest a ball point pen. Sure, some ink may get in, but that just makes it more interesting, kind of like sand art.
As for condoms, I have never had one break, but know of plenty of people that have. I believe that the main reason is that many people have no idea how to put them on right. It pays to read the instructions on the inside of the box. If it weren't for that, I never would have known that you have to pinch the top when you are putting the little bastard on to keep air from getting in.
Good example: in five years I have never had a condom break. My current girlfriend, prior to our relationship have several break during a six month relationship. When she told me this, I asked her to show me how she and the ex put the condom on...there was so much air at the top that I'm lucky Andre the Giant (thats what I call the gentleman down under) didn't float away.
Anyway, condoms are extremely effective if you know how to use them. Read the instructions. They may not be hot, but they will keep the army off the front line.