You send the computer "joke" to all of your friends. Unfortunately, it's not a joke at all -- it destroys the computer's "hard drive, " which has copies of the operating system, and all personal files. It is very expensive and time consuming to restore a hard drive. Everyone is really mad at your friend, until they find out that you sent the virus! Then they are really mad at you. And your friend is mad at you for using his account. Sending a computer "virus" through the Internet is no joke. It is a crime. You could be in serious trouble, and you might have to pay for the damage that you caused.

Think about it:

Computer "viruses" (programs such as this one) do a lot of damage to computers every year. This damage is very costly to repair. Be careful whenever you "download" (copy) a program from the Internet. It could have a virus. Use a virus scan program to check out the program BEFORE you put it onto your computer's hard drive.

It is wrong to use someone else's account without their permission. If you would not do something using your own account, maybe you should not do it at all.