Sandwich prank No.1 - Invertebrates
As we all know working in a factory is pretty boring and a variety of hilarious pranks and stitch ups are the norm. This one springs to mind though:

Mark brought his packed lunch to work every day, he would have been about 21 when this happened and still lived with mummy. Nothing wrong with a pack lunch of course unless you bring in exactly the same thing every day for three years.
1 Banana, 1 satsuma, one packet skips (prawn cocktail), one Cheese and Pickle (branston) sandwich on mighty white cut into equal rectangular halves. Every day. I wouldn't have been surprised if it was the same clingfilm rinsed out a bit.
We tired of this lunchtime monotony and decided to spice up the sandwiches with our own brand of twisted filling. Insects.

At first it was a daddy long leg wing or two. Then when we got a bit braver, a whole bluebottle. He never noticed, not even when we put in a medium sized moth complete with a bogey 'top hat'. Although that one was quite hard to watch.

However, one day the stakes were upped massively and an arachnid was thrown in to the equation. A big fuck off hairy house spider. It would barely fit in the fucking bread.
We watched with baited breath as he casually unwrapped the delicacy...and then...I saw it-
One of the enormous legs was hanging out of the side of the sandwich, and to make matters worse a small cube of pickle had become attached to the end of the leg like some kind of savoury spaz shoe.
I couldn't take any more and alerted Mark of its presence. We made out it had crawled in there at preparation stage and he agreed that was the most likely explanation. The game stopped after that.

More sandwich fun later.
(SPLUFFMYPANTS, Mon 17 Dec 2007, 18:24, Reply)