At a shop I used to work at, we did the same thing with anti-seize. We'd put it everywhere! Under door handles, trunk lids, pop the hood and put a little on the safety latch, oil caps, washer fluid, on gas caps, on the backside of the shifter... EVERYWHERE! Then it turned into personal attacks. We'd be welding and the others would sneak up behind and very carefully put a little on the knob on your helmet. Grab a stick and put it way up in the finger tips of your gloves. Then there was the porn. See, we did a monthly maintenance at a garbage transfer station and you wouldn't believe how much porn gets tossed away. FREAKIN' RECYCLE IT!!! Anyhow, we'd stash away the oldest, nastiest, hairiest and biggest mustache porn we could find and hide it away for a good occasion. Then we'd roll it up and put it in the sun visors so when you've got your girl with you and the sun was out she flip down the visor and get a face full of it! I started the act of porning lunch boxes too. Take all their stuff out of their lunch box and cram a bunch way in the bottom and hope that they'd have something leak out and get it all wet. Imagine, getting home all tired and dirty and then having a bunch of soggy gentleman sausages waiting for you. HA!!!