Musical Chairs

Take the fancy office chair out of the boss’s office and switch it with the ugliest chair. Whoever had the ugliest chair will probably be happily surprised to see their “new” chair, and the boss will probably be embarrassed to have to come and take it away. Of course, you better make sure your boss has a good sense of humor!

Soft Hat

For a person who is required to wear a hard hat at work: hide their hat replace their hat with one you have painted bright pink, or otherwise decorated in an embarrassing way. Unless they can find someone who will loan them one, they’ll be forced to wear it all day.

Did You Call Me?

If you have an office phone system that allows conference calling, you can prank two people at once. Call the first victim’s extension, then very quickly call the second victim and push the conference button. Now both people will think the other person called them and will begin arguing over who called whom!

Invisible Ink

Go into the victim’s office and locate every pencil and pen in their desk. Paint the tips with clear nail polish. When they try to write, none of them will work. (After the prank is revealed, the nail polish can be removed by dipping the pens and pencils in polish remover.)

Take the Call

Use glue to secure the victim’s handset to the phone (be sure to use glue that can be removed…check the label first because some glue will destroy plastic). Then go to a nearby phone, call their number and watch while they lift the entire phone to their ear.

No Comprende

Borrow the victim’s cell phone when they aren’t around and change the language setting to a foreign language. Then watch and laugh as they struggle to translate the setting instructions on their phone.

Strung Up

Attach a string to the back of the victim’s desk drawer. Then run it up the wall, into the suspended ceiling, to a small container attached to the ceiling directly over the victim’s head. When the drawer is opened the string will be pulled, dropping a shower of confetti onto the victim’s head.

Kidnapped

Take an item from the victim’s office (something they use a lot such as a special coffee cup, stapler, pencil cup, etc.). Take a picture of the item and leave it on the victim’s desk (in the same spot where the item was located), along with a “ransom” note.

Where Do I Go?

This trick works great if you work in an office building that has two entrances. Print up two signs that say "Please Use Other Door." Put one on each door, with arrows pointing toward the opposite door.

Pager Madness

If the victim has an alpha-numeric pager, call them up and leave a message like “REPLACE BATTERY,” “PAGER ERROR,” or “SERVICE PAGER.” Call several times in a row.

Stop the Calls

If the victim has a phone with a hook that presses down when the handset is in the cradle, tape it down. When he or she answers a call the phone will keep ringing.

Tidal Wave

Take about 20 (or more) paper or plastic cups, place them on the victim’s desk and fill them with water. Then take a stapler and staple them all together. You can also put the cups on the floor blocking their door, or just about anywhere.

Switcheroo

Remove your victim’s desk chair and replace it with a bench from outside (the heavier the better!).

Just One Please

Take all of the victim’s paperclips and hook them together in one long string.

While You Were Out

Leave a phone message for the victim that says that a “Mr. Lyon” called (or Mr. Behr also works), and wants to be called back. Then list the phone number of the local zoo.

Copier Surprise

Print out some pictures of a scantily-dressed girl, or other racy image. Mix them into the paper tray of the office copier or printer. When the victim makes copies, they’ll have a big surprise!

A Call From Above

If you work in an office with a suspended ceiling: Hide his phone in the ceiling tiles above your victim’s desk. When they arrive…give them a call!

Have a Seat

Take all the chairs you can find from other offices, the conference room, etc., and fill up your victim’s office as full as possible.

Oh So Pretty

Replace everything on your (male) victim’s desk with similar items, but make them as “girly” as possible (pink pens, lacy picture frames, bows, flowers, etc.). Remember to change his screen saver too!

Blown Away

Put confetti in your victim’s fan (tape the bottom to hold in the confetti if necessary).

Can You Hear Me Now?

Place a piece of clear tape over the microphone part of the phone. Laugh as your victim struggles to talk to their callers.

Stringing Them Along

Using fishing line or black thread, tie everything on your victim’s desk--stapler, tape dispenser, pencil cup, etc.--to his chair. When he pulls the chair out, everything on his desk will go crashing to the floor! Or, attach everything on your victim’s desk to the back of one or more of his desk drawers (string the line through the holes in the top of the desk). When he open the drawer, all his stuff will go crashing across his desk.

Office Full

This prank is for a co-worker who has an office with a glass window in the door. Find a box slightly bigger than the window, cut off one end and tape it to the door around the window (with the open end at the top). Fill the box with empty cans, balloons, packing peanuts, or other item of your choice. When your victim looks in the window it will look like the entire room is filled! For added effect, put a chair or something behind the door to make it hard to open.

Rude Awakening

Plug a radio into the power strip that your victim’s computer is plugged in to. Turn the volume all the way up. Now turn the power strip off. Your victim will at first be puzzled why their computer won’t turn on; and then will get a big surprise when they flip their power strip on.

Topsy Turvy

This prank is elaborate but fun: Remove all the drawers from the victim’s desk. Flip the entire desk upside down, replace the drawers, then flip the desk back. Now when the victim open the drawers, all the stuff will fall out straight to the floor.

Who's That Guy?

Photoshop his face into a bunch of funny scenarios and put them up all over the office.
Submitted by Senor Bud

Redecor-Hate

First, determine what your victim’s least favorite thing is—sports team, political view, movie, music, etc. Then cover his or her work area with posters and items celebrating that thing. (For example, if he’s a Chargers fan, cover his office with Raiders gear.)
Submitted by Savannah B.

Monkey Trouble

Borrow all the pictures from his desk and office. Scan the photos, and use a photo-editing program to put monkey faces onto everyone’s faces. Print them out and place them back on the victim’s desk.

Pick Up the Phone!

Take a small piece of wire and wrap it around the handset cord of the victim’s phone. Place it so both ends of the cord are attached together. Then wait until the victim receives a phone call and watch while they lift the handset and they pick up the entire phone along with it.

Can You Do It

If he has an overhead bin style cabinet, layer the bottom with paper, then attach the paper to the door (with tape or something) so it comes out when the door to the cabinet is open. Then fill it with empty soda cans. When he opens the door to his cabinet, viola, all the cans will come crashing out and it will be most embarrassing for him.
Submitted by Little Evie

Dude, Where's My Car?

Borrow your victim's car keys and make a duplicate. Then, every day or so, move the car a few parking spaces over, or turn it around so it’s parked backwards in the space. Eventually start moving it to another part of the lot altogether. Classic.
Submitted by Skrivan

Lucky Ducky

Find a small rubber ducky, remove the jug from the office water cooler, and squeeze the duck inside. Replace the jug and wait for the fun!