“‘Dormitory’ is an anagram for ‘dirty room’”

“Dormitory” is an anagram for “dirty room.” The “dormitory” anagram has been noted since at least 1973, when it was included in the book Palindromes and Anagrams by Howard W. Bergerson.
 
     
Google Books
Palindromes and Anagrams
By Howard W. Bergerson
New York, NY: Dover Publications
1973  
Pg. 51:
Dormitory. Dirty room.
 
Google Books
Pascalgorithms:
A Pascal-Based Introduction to Computer Science
By Edwin D. Reilly and F. D. Federighi
Boston, NY: Houghton Mifflin
1989
Pg. 503:
DORMITORY <—>

DIRTY ROOM
 
Google Books
38 Jumble
By Henri Arnold and Bob Lee
New York, NY: Jove Publications
1989
Pg. 111:
Answer: What a dormitory could be— A “DIRTY ROOM”
 
31 July 1995, Arizona Daily Star (Tucson, AZ), “Rearranging names reveals weird, often silly meanings,” pg. 2A:
Knowing that “dormitory” and “dirty room” ...
       
Google Groups: acadia.chat
Anagrams
John Gilhuly
2/12/99
If you like word games and anagrams you’ll probably find these interesting:
Dormitory                 Dirty Room
 
Google Groups: alt.jokes.pentium
Anagrams-these are really spooky
lisa
11/5/99
hopefully this is sent with the text-i’m new to this.
 
> Word                 When you rearrange the letters
>  ————————————————————————————————
>  Dormitory                   Dirty Room
 
Google Groups: tamilcommunity
Interesting Scramble Words…
kraman
7/22/08
DORMITORY:
When you rearrange the letters:
DIRTY ROOM
 
Google Books
Word Play:
A cornucopia of puns, anagrams and other curiosities of the English language
By Gyles Brandreth
London, UK: Hodder & Stoughton
2015
Pg. ?:
dormitory = dirty room
 
Twitter
@Hikaru_Ryoichi
‘DORMITORY’ adalah anagram dari ‘DIRTY ROOM’.
Translate from Indonesian
2:30 AM - 2 Aug 2017
 
Twitter
アナグラムbot‏
@AnaLgram_bot
dormitory = dirty room　（学生寮＝汚い部屋）
Translate from Japanese
5:00 AM - 4 Aug 2017
 
Twitter
Frank Bunton‏
@TwistinFrank
DORMITORY: When you rearrange the letters:
DIRTY ROOM
4:45 AM - 23 Aug 2017
 
Twitter
Matthew Cross‏
@crisscross4518
Dormitory. More like Dirty Room. Just rearrange the letters.
1:25 PM - 27 Aug 2017
 
Reddit—Shower Thoughts
“Dormitory” is an anagram for “Dirty Room”
submitted August 29, 2017 by SoDakZak
 
Twitter
Shower Thoughts‏
@Thoughts4Shower
“Dormitory” is an anagram for “Dirty Room”
#showerthoughts
1:04 PM - 29 Aug 2017