“In my defense, I was left unsupervised”

“In my defense, I was left unsupervised” is a jocular saying that has been printed on many images. “In my defense, I was left unsupervised” was posted on Twitter by Sean on January 13, 2015. The saying is often used in a work environment.
 
   
Twitter 
Sean
@Sean_Burgundy_
In my defense, I was left unsupervised
7:18 PM - 13 Jan 2015
   
Twitter
Ntate Mr.K
@Gaylord50
In my defense, I was left unsupervised
5:10 PM - 16 Jan 2015
   
Twitter
Akhil Hassan
@AkhilHassan
”@Sean_Burgundy_: In my defense, I was left unsupervised”
11:46 AM - 17 Jan 2015
   
Twitter
The Real ExTex
@theRealExTex
heh, gonna remember this one… > In my defense, I was left unsupervised
via @Sean_Burgundy
9:23 AM - 19 Feb 2015
 
Google Books
Eleventh Grave in Moonlight:
A Novel

By Darynda Jones
New York, NY: St. Martin’s Press
2017
Pg. 178:
He eyed me, a dimple appearing at one corner of his mouth, but he was mostly looking at my T-shirt, which read, IN MY DEFENSE, I WAS LEFT UNSUPERVISED.
 
Google Groups: The Grif.net
08/30/17 Grif.Net - Seen on T-shirts
Dr. Bob
8/30/17
(...)
In my defense, I was left unsupervised.
       
Google Books
Title In My Defense, I Was Left Unsupervised: Gag Gift for Coworker - Funny Co-Worker Notebook - Office Gag Gifts for Coworkers - Funny Coworker Gag Gifts for Men Or Women - 6 X 9 Wide-Ruled Paper 108 Pages Composition Book
Author Creative Spirits Creative Spirits Journals
Publisher CreateSpace Independent Publishing Platform, 2018
ISBN 172422624X, 9781724226242
Length 108 pages
 
Stamford (CT) Daily Voice
NEWS 07/07/2018
Missing 7-Year-Old Quickly Located In Stamford
Zak Failla
(...)
Armed with the knowledge of his favorite store and a description of his clothing - a red t-shirt that read “In My Defense I Was Left Unsupervised” - investigating officers quickly tracked down the youngster at the store and he was quickly returned to his concerned parents.
 
Twitter
Donner Stocks
@dstocks19
in my defense, the moon was full and i was left unsupervised. #summersunday
10:53 PM - 26 Aug 2018 from Minneapolis, MN