Anagrams are words or phrases that are made by rearranging the letters from another word or phrase. These particular anagrams seem to retain the same meaning even after being reordered. I happened to come across these anagrams while reading a Bathroom Reader book. These were taken from Page 229 of Uncle John's Absolutely Absorbing Bathroom Reader.
The word DORMITORY, when rearranged, becomes DIRTY ROOM.