do you have anyone who really bothers you, enough to agrivate you to the point of wanting to leave a coffee stain on their important documents?!?  well, if so, the coffee stain pen is perfect for you, all for the low price of $9.99! just joking, heres how to make one for next to nothing! :D

Step 1: Materials:

to get revenge now, all you need are:

-a bic pen, or a very similar style of pen with a cap
-coffee(and a coffee machine, you silly goose!)
-scissors for cracking open the pen
-a gluegun to make it watertight

(a funnel and tape turned out to be very handy for filling the pen with coffee)

and last but not least, a victim!!! >:P
do you really need a glue gun<br />
yes, you need a glue gun, if you do not make it watertight the coffee will leak out before it is supposed to, ruining the effect.

About This Instructable


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Bio: I am a first year architecture student. I'm particularly interested in the areas of design and fabrication, especially 3D printing and CNC cutting and ... More »
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