A taxidermist stuffs animals.
     
“Blessed are the taxidermists, for they shall know their stuff” was posted on the newsgroup alt.religion.christian on July 21, 2002. “Taxidermists really know their stuff” was posted on Twitter by Andy Pfister on February 19, 2010. “Taxidermists. They know their stuff” was posted on Twitter by Brycey on April 2, 2010. “Taxidermists are quite knowledgeable. They really know their stuff” was posted on Reddit—Cleanjokes on March 21, 2018.
   
 
Wikipedia: Taxidermy
Taxidermy is the preserving of an animal’s body via stuffing or mounting for the purpose of display or study. Animals are often, but not always, portrayed in a lifelike state. The word taxidermy refers to the process of preserving the animal, but the word is also used to describe the end product, which are often called “mounts”. The word taxidermy is derived from the Greek words “taxis” and “derma”. Taxis means “to move”, and “derma” means “skin” (the dermis). The word taxidermy translates to “arrangement of skin”. Taxidermy is practiced primarily on vertebrates (mammals, birds, fish, reptiles, and less commonly on amphibians) but can also be done to larger insects and arachnids under some circumstances. Taxidermy takes on a number of forms and purposes, including natural history museum displays, hunting trophies, study skins, and is sometimes used as a means to memorialize pets. A person who practices taxidermy is called a taxidermist.
     
Google Groups: alt.religion.christian   
:=) The Ultimate Blessed List
Ninure Saunders
Jul 21, 2002, 10:28:40 AM
(...)
** Blessed are the taxidermists, for they shall know their stuff.
     
Twitter
Andy Pfister
@Hunting_Fishing
Taxidermists really know their stuff.
3:03 PM · Feb 19, 2010·TweetDeck
   
Twitter
Brycey
@swissrhapsody
Taxidermists. They know their stuff.
7:36 PM · Apr 2, 2010·Twitter Web Client
   
Twitter
Timothy Wycislak
@TimWycislak
Taxidermists really know their stuff.
8:36 AM · Apr 29, 2010·Twitter Web Client
   
Twitter
the talking corset
@talkingcorset
You know guys, taxidermists really know their stuff.
1:36 PM · Jun 21, 2010·Twitter Web Client
   
Twitter
Starski111
@starski111
Taxidermists really know their stuff.
1:17 AM · Jun 3, 2011·erased734497
 
Google Books
Gagged and Bound:
A book of puns, one-liners and dad jokes
By Nick Jones
Full Medis Ltd
2014
Pg. 95:
Taxidermists. They know their stuff.
   
Twitter
Arnie
@Dads_Arnie
#slogansforprofessions Taxidermists know their stuff
1:55 PM · May 23, 2015·Twitter for iPad
   
Twitter
Jim Crowfoot
@CrowfootJim
Taxidermists know their stuff
1:13 PM · May 20, 2017·Twitter for iPad
 
Reddit—Cleanjokes
Posted by u/chacham2 March 21, 2018
Taxidermists are quite knowledgeable.
They really know their stuff.
   
Twitter
Clive Barnard
@bevilc
Taxidermists really know their Stuff
#JokeOfTheDay
2:16 AM · Oct 23, 2021·TweetDeck
 
Reddit—Cleanjokes
Posted by u/chacham2 December 23, 2021
Why are taxidermists so good?
They really know their stuff.