Rapid TP dispenser prank

To truly prank somebody, you have to catch them off-guard. And where are people most susceptible to surprise?...

A small project motor and 9V battery power a pulley belt (rubber band) which is attached to a roll of TP. When pulled on, even slightly, a toggle switch is flicked and the TP rapidly dispenses! This prank requires a bit of investment, but the payoff is supreme!

_{Update 3/31/12: Wow, 10k views in one day! I didn't think this prank would be popular, but since it is I decided to update step 3 for those of you who actually want to attempt this. Good luck!

4/1/12: Successfully pranked my roommate with this today! This prank was immediately preceded by another great prank. Ah, it was a hilarious moment...}

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Step 1: Prepare the prank

The first step is to prepare the cardboard insert. This will allow a motor to turn the TP roll.

Create a cardboard tube that is slightly smaller in diameter than a TP tube, but bigger than the plastic cylinder that the TP rotates on. I used an empty TP tube and cut out a section, then taped it back together
Glue or tape a few small strips of cardboard to the tube.
Insert the tube inside a roll of TP. It should fit easily and snugly.

chemkid42 says: Apr 3, 2012. 3:28 AM

to do this to the staff only bathrooms at a public high school would be priceless

qwerty987 says: Apr 1, 2012. 1:21 PM

i just now put this into my parents bathroom with a pressure switch under the seat and the wires hidden as best as i can. Now all i have to do is wait for it. One other prank i did is plug in my wireless mouse to my parents computer and pretend to be using it on my computer.

WYE_Lance (author) says: Apr 2, 2012. 10:22 AM

Ah a pressure switch under the seat is a much more elegant trigger. good thinking

astrong0 says: Apr 1, 2012. 10:20 PM

awesome 'ible! nice vid too, did anyone else watch the drunk guy sing bohemian rhapsody? it caught my attention.

Ben Nguyen says: Apr 1, 2012. 3:01 PM

Great idea! Now, you cold also try reversing the motor to cause the roll to spew out an uncontrollable stream of toilet paper (although it would most likely cost you a roll of paper).

Keep it up!

josephlebold says: Apr 1, 2012. 8:36 PM

Yeah really... Did you happen to watch the video?

Ben Nguyen says: Apr 1, 2012. 9:25 PM

Ahh, my bad. I only watched the one where it went backwards and rolled itself up. Thanks for pointing that out.