April Fools Pen

This is a avery simple April Fools Joke. It can be played on anyone but the more intensely focused a person is the better. I used it on my manager and several others and I got everyone. Some play acting is required.

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


Step 1: Open the Pen

Take the cap off the pen and gently pull on the writing part of the pen it should come apart fairly easily.
At this point you have:
a pen filler
a pen cap
a hollow pen with one plug in an end of it

Step 2: The Second Pen...

All you need from the second pen is the plug in the end of the pen. I gently pried my finger nail under the edge and it came right out.

Step 3: Assembly

Now take the plug from the second pen and press it into the empty end of the hollow tube from the first pen.

You can keep the actual pens for use as refills in other pens or deconstruct these after the joke and use them normally.

Step 4: All Finished... Now Go Find Your Victim

Place the either of the pen caps back on the double plugged hollow tube and it looks like an ordinary pen.

Finding your victim:
The best victim is an extremely focused individual.

ALSO try to get into theior office and hide all other pens this makes things really easy

Find several things you need to have them sign or mark up or something but state that it is very confusing and the they need to look at it carefully.

Hand them the documents and the 'pen' at the same time.

Generally the person will focus on the content and not even think about the pen.

When they get done 'examining the confusing document or sometimes even while they are examining it they will glance at the pen notice it is capped and uncap it moving the cap to the other end in preparation for signing.

They then go to sign and the see the pen is still capped so they uncap it again and move the cap to the other side and wallaaaa it is still capped.

Depending on how intensely focused on the confusing document they are, they may actually uncap the same hollow tube several times before they even catch on.

Note several of these pens can be placed in offices and the fun can last all day long.

You can even get the same person multiple times in this way.


First Prize in the
April Fools Contest



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    46 Discussions


    6 years ago on Step 4

    Laughed like crazy reading this one. Thank you and great job :)


    8 years ago on Step 4

    I have done this for years, almost as long as they have been making the Biro. The brilliant part was to make an Instructable about it, which you did, and brilliantly!


    10 years ago on Step 4

    i will try this on my dad as soon as possible. THIS IS AWESOME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    1 reply
    Saturn Vgrundisimo

    Reply 9 years ago on Step 4

    agreed. I'm gonna buy the pack of 100, do this to every single one, and give the 50 pens to my teachers.  THAT WILL BE HILARIOUS!!!!!!!!!!!!!!!!


    9 years ago on Introduction

     I am so doing this on my mom next time she needs a pen, and congrats on winning


    9 years ago on Introduction

    This one is great! My cousin bought the 100 pack and all day we made these out of them all. Great prank =)


    Reply 9 years ago on Introduction

    You would be surprised I think I mentioned this somewhere that it works REALLY well on TYPE A personalities they are focused on the most important things as are most of us but TYPE A's especially and most people don't notice.

    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


    Reply 10 years ago on Introduction

    It's hard! I stuck a wooden chopstick up the barrel and slammed the hell out of it until it popped out.


    Reply 10 years ago on Introduction

    What I do to get them out is to slam the end that you write with onto something and pop the back out. Then take out the ink tube and put it in backwards. Do the same thing to the open end to pop the front out. Then but the end back in.


    Reply 10 years ago on Introduction

    Yeah I did run into some that were a bit tight but for the most part they came out easily...it might have been the batch I got (I think mine was a twenty or twenty five pack) The chopstick would be a great idea.