“Why did Tarzan spend so much time on the golf course?”/“He was perfecting his swing.”

Tarzan (a fictional character) usually swings in the jungle, but a golf riddle is:
 
Q: Why did Tarzan spend so much time on the golf course?
A: He was perfecting his swing.

 
     
Wikipedia: Tarzan
Tarzan (John Clayton, Viscount Greystoke) is a fictional character, an archetypal feral child raised in the African jungle by the Mangani great apes; he later experiences civilization only to largely reject it and return to the wild as a heroic adventurer. Created by Edgar Rice Burroughs, Tarzan first appeared in the novel Tarzan of the Apes (magazine publication 1912, book publication 1914), and subsequently in 25 sequels, several authorized books by other authors, and innumerable works in other media, both authorized and unauthorized.
         
Google Books
The Mammoth Book of Really Silly Jokes:
Humour for the whole family

Edited by Geoff Tibballs
London, UK: Constable & Robinson, Ltd
2011
Pg. ?:
Why did Tarzan spend so much time on the golf course?
To perfect his swing.
   
Twitter
Frugal Fairhope
@FrugalFairhope
Why did Tarzan spend so much time on the golf course?
He was perfecting his swing.
Thanks 24/7
7:11 AM - 6 May 2012
   
Twitter
Mix 96.7 WBVI-FM
@Mix967WBVI
Your terrible joke of the day “Q: Why did Tarzan spend so much time on the golf course?
A: He was perfecting his swing.”
5:09 AM - 24 Jul 2012
 
Google Groups: b5nd3998as9bkq
Tarzan In Swingers Chatroom - Black Tote Bag 14w X 14h X 3d
Atencio
7/15/14
(...)
Top 10 Best Tarzan Jokes
#10 Why didn’t Tarzan answer Jane’s call? His vine was busy! #9 ; Why did Tarzan spend so much time on the golf course? He was perfecting his swing!
   
Google Books
Gigglers: Sporty Jokes
By Toby Reynolds
London, UK: Scholastic UK
2016
Pg. 50:
Q. Why did Tarzan spend so much time on the golf course?
A. He was perfecting his swing!
 
7 September 2017, Daily Mail (London, UK), “On This Day” by Etan Smallman, pg. 34:
JOKE OF THE DAY
WHY did Tarzan spend a lot of time on the golf course? He was perfecting his swing.
 
Twitter
Neil
@NeilsArsenal
Why did Tarzan spend so much time on the golf course…. He was perfecting his swing. 😂
6:39 AM - 22 Jun 2018