
Firstly, convince everyone you're going for starbucks (KLP) to take a breather/do hw/鬼混. :D Once you reach KLP, secretly get to Cold Storage to purchase your ingredients, look around frantically to make sure you see nobody familiar. After that, grab your ingredients immediately and rush to pay for it. Be very very sure no one spoils your plan!
After which, proceed to starbucks and lay out your ingredients in an organized manner. In this case, ground white pepper, good quality wasabi (be nice to your peers), and a box with packets of Oreo. Make use of starbucks' recycled serviette as your working area xD As much as you feel like laughing with your mate, suppress your evil laughter and get down to work. (But I know it's hard. However, ignore bypassers' looks of disgust or maybe bask in the admiration for your ingeniousity.)
Firstly, dismantle your oreo and cut a hole in the middle with the stirrer provided by starbucks. Squeeze the wasabi from the tube into the hole CAREFULLY. Be sure the wasabi does not affect the border around it. And the main principle is to be generous.
After which, sprinkle pepper. Once again, the golden rule is: BE GENEROUS. 做人本来就要大方一点。
Keep working till 2/3 of the oreos are used up. After which, put 2 contaminated oreo back into the packet, and put a clean one on the top. This is the rationale: You see a friend, and you take the packet of 3 oreos out from your pocket. You take the first clean one, eat it casually and offer the second one to your unsuspecting friend. Lol, then you can enjoy watching your friend tearing, while shooting you with vulgarities. Get the best effect when you play this on friends who can't take spicy stuff. Don't try it on linmin. It has no visible effect on her.The innocent oreo that made so many people tear on 1st April 2010.
Thank you thank you. (:AN EVIL PRODUCTION BY YAJUN&IRENE.

EXTENSION:
Offer a bottle of saturated salt water to your friend after she devours the Oreo. But usually only the dumbest of the dumbest will accept it.
Additional tips:If you have a blog, go blog that you are giving out free Oreos due to the overload of Oreos at home. And if you decide to be kind, put the blog post title as "Can you trust me?" to warn people of the catastrophe. Well, you've warned them.