“Does working for UPS make you a professional boxer?”

A joke about the term “professional boxer” is that it applies to someone who works at UPS (United Parcel Service). “Professional boxer…at the UPS store” was posted on Twitter on January 24, 2009. “I met a professional boxer today. he works at UPS” was posted on Twitter on December 20, 2011.
 
“Does working for UPS make you a professional boxer?” was posted on the website Pun of the Day on September 11, 2014.
   
       
Wikipedia: United Parcel Service
United Parcel Service (UPS) is a package delivery company and a provider of supply chain management solutions.[4] The global logistics company is headquartered in the U.S. city of Sandy Springs, Georgia, which is a part of the Greater Atlanta metropolitan area.
     
Twitter
Timothy Meier‏
@TJMeier
#myfirstjob Professional boxer…at the UPS store.
12:07 PM - 24 Jan 2009
   
Twitter
ern.‏
@ernalicious36
I met a professional boxer today. he works at UPS.
8:43 PM - 20 Dec 2011
   
Twitter
J V Y‏
@jaydosuno
I’m a professional boxer, for UPS.
7:45 PM - 10 Jan 2012
 
Twitter
UNIF‏
@UNIFCLOTHING
If I worked at UPS, I would tell everyone I was professional boxer.  #UNIF
12:29 AM - 13 May 2013
 
Twitter
Cat O’Nine‏
@Cat_ONine
Is the packing guy at the UPS store considered a professional boxer?
4:16 PM - 24 Dec 2013
 
Pun of the Day (September 11, 2014)
Does working for UPS make you a professional boxer?
Category - Services and Occupations
Submitted by - Skapotts -
 
Twitter
Tulleuchen‏
@tulleuchen
Does working for UPS make you a professional boxer?[Click to Vote!]
http://tinyurl.com/md9hjqx
2:04 AM - 11 Sep 2014
   
Google Books
A Limerick a Day for a Fourth Year
By Kevin Ahern
Lulu Press (Lulu.com)
2016
Pg. 33:
SIXTEEN
It is hard to believe Cindy Noxer
A girl who’s a real bobby-soxer
Is now a success
Working at UPS
Where she’s a professional boxer
 
Reddit—Oneliners
Does working for UPS make you a professional boxer?
submitted November 26, 2017 by madazzahatter