Kim - i remember it happening at a nightclub in Batley, people getting jabbed with something sharp and someone saying "welcome to the club"
also recently, there was a spate of needles been wrapped in newspapers and stuffed down the side of seats on trains in the manchester and rochdale area - these needles were from drug users, IE - crack and heroin, but could well be contaminated with HIV, Hepatitis or any other blood transmitted disease - when you think about it, its very scary.
But the initial post on this thread is most definately a hoax