You need:
2 BIC Pens (you know the 100 pack ones you can get at the drug store)
a victim or two or three or four
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Signing UpStep 1: Open the pen
At this point you have:
a pen filler
a pen cap
a hollow pen with one plug in an end of it






































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I did this to a manager of mine a long time ago and she actually turned it over and over 3 times she just absent-mindedly thought she had missed the fact that the pen was already open and put the cap on instead of taking it off so she did it again and again and again. I could barely keep from cracking up the whole thing lasted about 15 seconds.
Another thing these are so easy to make that you can make several and lay them around and just watch. Even when people know it is there if it is in a normally very conveniently used place they will keep doing it over as well
BTW, "Wahlah" is pronounced Vwah -lah (spelt "voila") Etymology: French, literally, see there
Thanks very much for sharing your well done instructable! :0) You have a great sense of humour!