Ladies and gentlemen! Boys and girls! Children of all ages! Have we got a killer prank for you, perfect to pull on your co-workers. And, with April 1 just around the corner, you need to have a fresh stock of tricks in your bag.

It’s going to cost you ten bucks, but the outcome and hilarity are worth every penny. The first thing you need to do is install Skype and create an account, if you don’t already have one. Then, you’ll need to load up the account with cash--$10 is the minimum you can buy, but the actual prank won’t cost you a cent, and you’ll have ten bucks worth of Skype credit to make cheap long distance calls with when you’re done. You need to buy the Skype credit well in advance of the designated pranking hour, sometimes Skype takes a few hours to credit your account.

The hard part is collecting the numbers and typing them in to Skype. After that, it's nothing but laughs!

Skype lets you run a conference call with up to 24 people simultaneously, but the trick is that they can be a mixture of Skype accounts and phone numbers. To setup your call, you need to do is start a conference by clicking on the conference button on the main Contacts tab, then type in the numbers of the people you want to call. For maximum LOLs, I recommend making every phone in your work area ring—desk, fax, and personal cell numbers, if you have everyone’s numbers. When you press the Start Call button at the bottom of the window, all the phones in your office will ring at once. Caller ID will show Unknown Caller or 000-000-0000, and when people pick up, they’ll hear each other talking, but no other callers. The effect in and of itself is quite eerie and hilarious, but we've got three variants on the next page if you want to take this one step further over the line.