Just leave these plain white coffee mugs next to the office coffee maker and stand back. No one will suspect that on the bottom of that boring coffee mug is a label meant just for them. Of course if your supervisor picks up the one saying “Office Bitch” they might get a little angry. Maybe not the best thing to do in the current job market, but if you’re already on the way out, you might as well have some fun. These cost £4.99 or about $8 from Thumbs Up UK, but as of now they’re all out of stock.