“I was shopping online and saw a horse that I rather liked. So I clicked ‘Add to cart’”

Online shopping often has the option “Add to cart.” This cart doesn’t involve a horse, but a joke was posted on Twitter by sickipediabot on September 29, 2010:
 
“I was shopping online and saw a horse that I rather liked. So I clicked ‘Add to cart.’”
 
The joke originated on the Sickipedia website.
   
     
Twitter
Tom Bailey
@tinytom21
I was shopping online and saw a horse that I rather liked.  So I clicked “Add to cart.”
2:10 PM - 29 Sep 2010
 
Twitter
sickipediabot
@sickipediabot
I was shopping online and saw a horse that I rather liked.
So I clicked “Add to cart.”
5:00 PM - 29 Sep 2010
 
Twitter
funny humour
@funnyhumour
I was shopping online and saw a horse that I rather liked.
So I clicked “Add to cart.”
6:16 AM - 30 Sep 2010
     
Google Books
5,000 Great One Liners
Compiled by Grant Tucker
London, UK: Biteback Publishing
2012
Pg. ?:
I was shopping online and saw a horse that I rather liked. So I clicked ‘add to cart’.
   
Google Books
The Mammoth Book of One-Liners
Edited by Geoff Tibballs
London, UK: Constable & Robinson Ltd
2012
Pg. ?:
I was shopping online and I saw a horse I rather liked. So I clicked, “Add to cart.”
 
Twitter
Jonny Cooper
@jonnycooper
It’s really easy to buy stuff in this online equestrian shop. I just saw a horse I rather liked, so I clicked “Add to Cart”.
10:35 AM - 9 Jun 2018
 
Twitter
97.9X
@979XROCK
Was just shopping online and saw a horse that I really liked. So I clicked “Add to cart.”
2:13 AM - 29 Jun 2018