These are too funny and I have to share them with other IT folks:

- CD-ROM: Consumer Device, Rendered Obsolete Monthly

- COBOL: Completely Obsolete Business-Oriented Language

- DOS: Defective Operating System

- IBM: I Blame Micro$oft!

- ISDN: It Still Does Nothing

- LISP: Lots of Infuriating Silly Parentheses

- MIPS: Meaningless Indication of Processor Speed

- NT: Never-ending Trouble

- SCSI: System Can't See It

- WINDOWS: Will Install Needless Data On Whole System