cup holder

n. The tray of a CD-ROM drive, or by extension the CD drive itself. So
called because of a common tech support legend about the idiot who called to
complain that the cup holder on his computer broke. A joke program was once
distributed around the net called cupholder.exe , which when run simply
extended the CD drive tray. The humor of this was of course lost on people
whose drive had a slot or a caddy instead.