Ok, one guy...
Mentioned one factor before, that this said person once came back to school after a week off claiming he'd had Anthrax. Theres more from him.
Came in once when about 12 or 13 telling everyone he had set up a gun sales website and was making hundreds of pounds selling non-existant guns and tasers, but got shut down by the FBI before he could give anyone a link to this site. He became convinced once a death penalty existed for a minor arson incident he was apparently police interviewed about (We live in Wales)...oh, told everyone his sister from the army had brought him home a rifle, using its registration number in his msn name and everything...it was of course made of plastic...was telling everyone at the age of 16 he had to go have MRI scans every week because doctors said he had a "Psychotic Brain"...not so much the genuinly weird kid, as the desperate attention seeker fantasist, who will bring a yellow pages to school and make sure everyone knows about, gets a chin hair, buys a shaver, brings shaver in to show everyone, then never shaves and ends up with multiple fine thin chin hairs a couple inches long each...
theres plenty more, but with this going on for 6 or 7 years I tend to forget lots of it.

EDIT:Just got reminded of the time a test tube of a clear liquid was produced at every possible oppourtunity for 2 days that was supposedly stolen from a lab during work experience. This was said to be chloroform and with the display of said person constantly taking sips from it came a print-off he had made with all the effects and dangers of drinking chloroform on it. Given none of these ever came to pass, its safe to say clear liquid was water Id say...
(Pigmash, Fri 19 Jan 2007, 17:30, Reply)