“What surfs the internet and goes, ‘Choo, Choo’?”/“Thomas the Search Engine.”

An internet riddle is:
 
Q: What surfs the internet and goes, “Choo, Choo”?
A: Thomas the Search Engine.
 
The pun is on the fictional steam locomotive Thomas the Tank Engine. “Thomas the Search Engine” was printed in a 2007 newspaper, and the riddle was posted on Twitter on October 9, 2009.
 
     
Wikipedia: Thomas the Tank Engine
Thomas the Tank Engine is a fictional steam locomotive in The Railway Series books by the Reverend Wilbert Awdry and his son, Christopher. He became the most popular character in the series, and is the title character in the accompanying television spin-off series, Thomas & Friends.
 
Thomas is a steam engine and has a number 1 painted on his side. All of the locomotives in The Railway Series were based on prototypical engines; Thomas has origins in the E2 Class designed by Lawson Billinton in 1913. Thomas first appeared in 1946 in the second book in the series, Thomas the Tank Engine, and was the focus of the four short stories contained within. Thomas’ best friends are Percy and Toby.
 
In 1979, the British writer/producer Britt Allcroft came across the books, and arranged a deal to bring the stories to life as the TV series Thomas the Tank Engine and Friends (later simplified to Thomas & Friends).
       
13 January 2007, The Spectator (London, UK), “The Spectator’s Notes” by Charles Moore, pg. ?:
I feel it is time to update various children’s books for the internet age. I suggest Five Children and IT, Swallows and Amazon and Thomas the Search Engine.
 
Twitter
Daily Joker‏
@DailyJokePost
What surfs the
Internet and goes, Choo,
Choo?
Thomas the Search Engine. http://dailyjokepost.com/1154
2:59 AM - 9 Oct 2009
   
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. ?:
What goes choo choo choo while online?
Thomas the search engine.
   
Google Books
Super Hot Jokes For Cool Kids!
By Various Authors
London, UK: Michael O’Mara Books Limited
2014
Pg. ?:
What internet page goes, “Choo Choo”?
Thomas the search engine.
   
YouTube
Ok, here is the joke. What surfs the Internet and goes, ‘Choo,...
botcaster inc. bot
Published on Jan 23, 2016
What surfs the Internet and goes, ‘Choo, Choo’?
Thomas the Search Engine.
 
Twitter
Lucky Score‏
@LuckyScoreNet
What surfs the
Internet and goes, ‘Choo,
Choo’?
Thomas the Search Engine.
#Joke from #InternetJokes in #Jokes, #Humor and #Satire
5:19 PM - 7 Feb 2018