A pun about “trainers” (sneakers) has been printed on several images:
 
“I found a hole in my trainer that’s big enough to put my finger through. One formal complaint from her, and I’m now banned from the gym.”
 
The joke (with “thumb” instead of “finger”) was posted on Twitter by James Martin on June 6, 2011.
 
 
Twitter
James Martin‏
@Pundamentalism
I found a hole in my trainer that’s big enough to put my thumb through. One formal complaint from her, and I’m now banned from the gym.
1:08 PM - 6 Jun 2011
 
Twitter
Joe‏
@jjreed090
I found a hole in my trainer that’s big enough to put my finger through.
One formal complaint from her, and I’m now banned from the gym.
3:10 PM - 6 Jun 2011
     
PPRuNe (Professional Pilots Rumour Network)
Friday Jokes
Noah_Zark
Old 22nd Jun 2011, 20:10
Well, that gym membership didn’t last long. First day there, I’m bending over and spot a hole in my trainer, it was big enough to push my finger inside.
She’s made a formal complaint, and now I’m banned!
   
Reddit—Jokes
I was down the gym this morning, when I noticed a hole in my trainer just big enough to get my finger in…
submitted November 28, 2011 by Belmish
...Anyway, she’s now made a formal complaint and I’m barred for life.
   
Google Books
5,000 Great One Liners
Compiled by Grant Tucker
London: Biteback Publishing
2012
Pg. ?:
I found a hole in my trainer that I can put my finger through. I’ve now been banned from the gym.
     
Facebook
Rude jokes for the over twenties
December 5, 2013 ·
Today i found a hole in my trainer big enough to put my finger in. Now she has made a formal complaint and i have been banned from the gym.
 
Twitter
Shit Jokes‏
@ShitJokes
I found a hole in my trainer that’s big enough to put my finger through.
One complaint from her, and I’m now banned from the gym.
3:30 AM - 17 Aug 2016
 
Reddit—Jokes
I went to the gym last week and I noticed a hole in my trainer big enough to put my finger in!
submitted March 16, 2017 by attorney_steve
Anyway, she made a formal complaint and I’m banned for life.