Careful, the Mafiaa might start quoting you.

I recall seeing a test of silk armour some time ago, probably on MythBusters or some similar show. IIRC, the arrow still pierced the flesh, but the silk was unbroken and stayed between the arrow head and the flesh. So, there is still a wound created, but it's a clean wound. I think the intention of silk armour was to prevent death from infected wounds, not to prevent the wound in the first place. Clearly, you'd also want to have mail/plate/felt in order to reduce the depth of the wound.

Where can I buy one?

I don't know where you or yellow belly come from, but in the UK 'public school' is often used to refer to privately-funded schools. It's possible you're both arguing from the same side of the fence. http://en.wikipedia.org/wiki/Public_school_(privately_funded)

Yes. It means bull faeces.

No-one's saying chiropractor's are totally useless charlatans, just that some of them appear to claim chiropracty has more uses than seems logical. You clearly had a problem with your neck, which (to me) suggests muscle or spinal problems. If pain killers/anti-inflammatories didn't fix the problem, it probably wasn't muscular, so getting someone to check your spine is where it ought to be seems like a reasonable suggestion. It's a faily big leap from "Chiropractors can fix musculo-skeletal problems", which I don't think anyone's arguing with, to "Bone crunching can cure asthma", which is clearly bullshit.