Have a little devilish fun with your friends and coworkers with these evil Embarrassing Fake Receipts ($5). These realistic looking receipts are for funny items and places you wouldn't want anyone to ever find out about, like adult bookstores, questionable movie rentals and more. Simply drop one of these faux receipts into your boss' expense report, leave lying near someone's cubicle or conveniently drop one in your friend's car or home, where it can be easily found. There are 10 different embarrassing fake receipts per package, which is more than enough to cause some serious havoc. (via Michael Kiely)