I actually posted about this on wotmania once asking about the legal implications of poisoning your own food and putting it into the fridge to see if someone would steal it. That's how pissed I was by the frequency of it at the time. I've had drinks stolen, sandwiches, granola bars... I once had a meal stolen I didn't even get for myself. I ordered a pizza and sent it to a friend at work. Before she could so much as have a bite, her co-workers had eaten almost all of it. Just helped themselves to the single full pizza box. It's one thing if you go into a communal break room and there's fourteen boxes of pizza sitting on the table, you assume management bought it for the employees to enjoy, but one pizza? You know that belongs to a particular person.