“I couldn’t figure out how to fasten my seatbelt, but then it clicked”

A popular pun about the seatbelt is:
 
“I couldn’t figure out how to fasten my seatbelt, but then it clicked.”
 
“I couldn’t work out how to fasten my seatbelt: then it clicked” was posted to the newsgroup rec.crafts.textiles.needlework on October 12, 2007.
   
 
Google Groups: rec.crafts.textiles.needlework
OT - punny quotes
Bruce
10/12/07
(...)
I couldn’t work out how to fasten my seatbelt: then it clicked
 
Twitter
Emily Rouge
‏@ecrouge
here is a pun: “I couldn’t figure out how to fasten my seatbelt. Then it clicked.”  (the sound the seatbelt makes & the idea of clicking in
2:10 PM - 11 Jun 2009
 
Twitter
howtotweets
‏@howtotweets
RT: i love his jokes ._. RT @owlcity I couldn’t figure out how to fasten my seatbelt. Then it clicked. http://tinyurl.com/nxzfrr
7:00 PM - 1 Jul 2009
 
Twitter
Kal Shal
‏@KaalShaal
I couldn’t figure out how to fasten my seat belt. Then it clicked.
6:40 PM - 25 Aug 2009
   
BuzzFeed
17 Terrible Puns To Brighten Your Day
Ba-dum-TISS.
By Maddi Lewis
posted on Jan. 28, 2014, at 10:15 a.m.
(...)
6. I couldn’t figure out how to fasten my seat-belt. Then it clicked.
 
Facebook
Best Puns
March 11, 2014 ·
I couldn’t work out how to fasten my seatbelt. Then it clicked.
 
Wonderfully Bad Jokes
I couldn’t figure out how my seat belt worked.
But then it clicked.
Bad jokes
May 3rd, 2014
 
Google Books
The Silly Book of Side-Splitting Stuff
By Andy Seed
London: Bloomsbury Publishing Plc
2014 (electronic edition 2015)
Pg. ?:
I couldn’t work out how to fasten my seatbelt. Then it clicked.
 
Facebook
Bad Jokes and Terrible One Liners
October 12, 2015 ·
I couldn’t work out how to fasten my seatbelt. Then it clicked.
     
reddit
I couldn’t figure out how to use a seatbelt
submitted August 22, 2016 by RyRy2756
But then it clicked.