Lint
I am in the habit of carrying around with me rather large amounts of tissue paperin my pockets, due to a combination of hayfever, dust allergy and the tendency to have colds all the time. This has led to neverending supply of ammunition, in the form of tiny rolled up balls of tissue, sometimes used. I've since developed a terrible habit of launching these tiny projectiles at anything that moves, usually accompanied by my childish giggling. Now, you wouldn't think that a tiny bit of tissue would cause much grief but believe me, when they're coming at a rate of about 40 per minute, it can get annoying. Course, I find it highly amusing.

You can always tell where I've been by the trail of carefully rolled up bits of tissue. I'd be the easiest person to track through a forest...

Plus I get to say to the canteen lady (every time, without fail), "Sorry, I only have 45p. Do you accept pocket lint?"
(fox_handybread, Thu 27 Oct 2005, 17:46, Reply)