"Blah" joke

Alice's PDP-10
With thanks (and apologies) to Chris Stacy, Alan Wechsler, Noel Chiappa, Larry Allen, and of course Arlo Guthrie, and particularly to Ann Marie Finn who is a kind soul and not at all like the person portrayed herein.-sra 3 May 85
This song is called "Alice's PDP-10". But Alice doesn't own a PDP-10, in fact Alice isn't even in the song. It's just the name of the song. That's why I called this song "Alice's PDP-10".
You see, it all started about two incompatible monitor versions ago, about two months ago on a Tuesday, when my friend and I SUPDUP'd over to MIT-OZ to pick up some hackers to go out for a Chinese dinner. But AI hackers don't live on MIT-OZ, they live on various assorted lispms and such, and seeing as and how they never log in except via the file server, they hadn't gotten around to doing filesystem garbage collection for a long time.
We got over there, saw 600 pages free, 10000 pages in use on a 5 pack PS:, and decided it would be a friendly gesture to run CHECKD for them and try to reclaim some of that lost space. So we reloaded the system with the floppies and the switch registers and other implements of destruction, and answered "Y" to RUN CHECKD?
But when we got the system up and tried to release all the lost pages there was a loud beeping and a big message flashed up on our screen saying:
PERMISSION DENIED BY ACJ
Well, we'd never heard of a version of ACJ that would let you go into MDDT from ANONYMOUS but not run CHECKD, and so, with tears in our eyes, we headed off over the Chaosnet looking for a filesystem with enough free pages to write out the LOST-PAGES.BIN file. Didn't find one...
Until we got to XX-11, and at the other end of XX-11 was another MIT Twenex, and in PS: on that MIT Twenex was another LOST-PAGES.BIN file. And we decided that one big LOST-PAGES.BIN file was better than two little LOST-PAGES.BIN file, and rather than page that one in we thought we'd write ours out. So that's what we did.
Went back to OZ, found some hackers and went out for a Chinese dinner that couldn't be beat, and didn't get up until the next morning when we got a SEND from Ann Marie Finn. She said, "Kid, we found you initials in SIXBIT in the right half of a POPJ at the end of a two megaword core dump full of garbage, just wanted to know if you had any information about it". And I said, "Yes ma'am Ann Marie, I cannot tell a lie, I put that XUNAME into that halfword".
After talking back and forth with Ann for about 45 messages we arrived at the truth of the matter and Ann said that we had to go rebuild the bittable and we also had to come down and talk to her in room NE43-501. Now friends, there was only one of two things that Ann could of done with us down at room 501, and the first one was that she could have hired us on the spot for actually knowing enough about Twenex to screw it up that badly, which wasn't very likely and we didn't expect it, and the other was that she could have bawled us out and told us never to be seen hacking filesystems again, which was what we expected. But when we got to room 501 we discovered that there was a third possibility that we hadn't even counted upon, and we was both immediately de-wheeled. CD%DIR'ed. And I said "Ann, I don't think I can rebuild the bittable with this here FILES-ONLY bit set." And she said "XOFF, kid, get into this UDP packet" and that's what we did and rode up to the square bracket asciz slash scene of the crime slash close square bracket.
Now friends, I want to tell you about the ninth floor of building NE43 where this happened. They got three KL10s, 24 LISPMs, and about 32 VAXen running 4.2 unix. But when we got to the square bracket asciz slash scene of the crime slash close square bracket there was five twenex hackers past and present, this being the biggest lossage yet by an RMS clone and everybody wanted to get in their suggestio