Where’s the peanut butter?!

Here’s a fun science experiment you can conduct at work. Have your
company install href="http://www.starbucks.com/business/icup.html">iCup’s all over
the place. Next, pour yourself a 12oz cup of hot chocolate. Resist
temptation to drink any more than a few sips and discretely
place that cup of hot chocolate on a shelf somewhere in your office.
Now comes the easy part — wait.

It probably won’t take long for the film of mold to cover the top of
the drink (at least this is my guess - I missed this part). Don’t get
discouraged! Biology is hard at work underneath and in just a couple
more days after especially slow evaporation through the mold and
polystyrene, the mold will be stretched thin enough to rupture.

A nauseous reward awaits you and your closest (in terms of proximity)
co-workers. For maximum effect, you should try not to remember where
you put the cup.