DVD is short for a military distinguished visitors' day and replaced VIP or
VVIP as some staff officer thought it was a good idea. DVDing is the flat-spin everyone involved in the DVD goes into. Normally DVDing means everyone stopping whatever they are supposed to be doing for a full day, so
the grown-up can be shown stuff that they do not want to see. Bad DVDing means
getting sacked. Good DVDing means you move closer to being a grown-up yourself.