People who are dismissed from jobs are often given two weeks’ notice. Failed personal trainers might be given, according to the pun, a “too weak notice.” “Too weak notice” was cited on alt.humor.puns on December 29, 2009. “I recently had a job as a weight lifter… but had to put in my too weak notice”  was cited on Twitter on November 13, 2011.
 
A joke was posted on Reddit on April 7, 2016:
   
“I’m kinda scrawny, so I had to quit my job as a personal trainer. Yeah, I gave ‘em my too weak notice.”
     
 
Google Groups: alt.humor.puns
Thirty days
Martin Mose Larsen
12/29/09
(...)
>> And the guy who was too strong so he could not work on weakdays
>
>That could be era-tateing for is boss…
 
If the boss got a too weak notice, a day before, it might help
 
Twitter
Bro
‏@ACRPOKERBOT
Gold’s Gym should give people citations if they cannot lift the recommended weight.
A Too Weak Notice.
10:15 PM - 2 Jun 2011
 
Twitter
Chris Fenton™
‏@chr1sfenton
I recently had a job as a weight lifter… but had to put in my too weak notice.
1:41 PM - 13 Nov 2011
 
Twitter
John Sanchez
‏@JohnSanchez
It’s a little known fact, but you can cancel your gym membership without a penalty If you provide them with a too weak notice.
8:33 AM - 31 Jul 2014
 
Twitter
Ben
‏@0point5twins
If you’re resigning as a gym instructor, you should give a too weak notice.
12:16 PM - 10 Mar 2015
 
reddit
I’m kinda scrawny, so I had to quit my job as a personal trainer
submitted April 7, 2016 by Aktionjackson
Yeah, I gave ‘em my too weak notice
 
Facebook
BodyTrac Health & Fitness Westchase
April 7, 2016
I’m kinda scrawny, so I had to quit my job as a personal trainer.
Yup, had to give the gym my too weak notice. :D
Ba-dum-dum!
 
The Amazingly Lame Joke of the Day
Thursday, July 28, 2016
Joey was pretty scrawny, so he had to quit his job as a personal trainer.
He gave them his too weak notice.
Posted by Tim Wycislak at 5:42 AM