Have Someone Hopelessly Lock Them Self in a Room! BEST PRANK EVER!

In this Instructable, I will be showing you how to make someone lock them self in a room!!!
The cool thing about this prank is that once it is set up, you can leave it and walk away. The victim unknowingly activates the prank themselves. Once the person enters their room and shuts the door behind them, the torture has begun!

The concept is simple, you have a room or bathroom with one of those push button or twisty locks, like shown in the picture. You take off the door knob assembly and put it back on, but backwards! This leaves the locky part on the outside of the room, where the prisoner cannot access it to free them self from their newly found prison cell. Now most locks do indeed have a little hole or something that you can shimmy a paper clip into to unlock the door. I will show you how to easily disable this feature, temporarily so that this prank will be perfect.

I want everyone to be aware that THIS WILL NO DOUBT LOCK THEM IN WITH NO ESCAPE!!!!! This system is dangerously foolproof and will lock someone inside a room or bathroom with no escape! Don't pull this prank if it's possible that an emergency could arise where a person would absolutely need to exit the room, because they will not be able to until someone comes and turns the knob on the outside. Please be responsible but also have tons of fun cuz it's April Fools!!!!! :P

Good Luck and remember to
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Step 1: Tools

You will need:

- A room with a door knob with a twisty or push lock
- A phillips screwdriver to unscrew the door knob
- A BB or pellet, something about that size to block the outside unlock mechanism
- About 3 minutes

Step 2: Procedure

First things first:

Unscrew the doorknob from the door. There should be 2 screws on the top and bottom of the knob.

You should have 2 knobs.

Place the BB or similar fragment into the open tube of the knob with the button on it. (I believe only the button knobs have this, I'm not sure as I've never taken apart nor am I using a twisty knob.) This will disable the prisoner from unlocking the door with a paperclip through the little hole.

Put the knobs back onto the door but BACKWARDS so that the part with the locking mechanism is on the OUTSIDE of the door, where the prisoner inside the room wont be able to reach it.

Screw it all back together

Now open the door and lock it!

When the victim goes into their room, they most likely wont notice any difference in the knob. When they shut the door, they are locked in! Once they realize that the knobs are switched, it's too late as there is no way to exit the room now!!!!!! HAHAHAHAHA n00b

I pulled this prank on my older sister last year and it worked perfectly! She yelled for about 45 minutes while I watched t.v. before I decided to let her out of her prison. :P