“Whatever you do, always give 100%. Unless you’re donating blood”

“Whatever you do in life, always give 100%. Unless you’re donating blood” is a jocular aphorism that has been printed on many images. The saying was first posted on Twitter on November 14, 2011, and probably originated on the Sickipedia website.
 
“If you don’t believe in random sampling, go to the doctor for a blood test, have him take it all” is another saying involving blood.
   
 
Twitter
Paul Kelly
‏@Nobbyfolk
Whatever you do, always give 100%. Unless you’re donating blood.  
#justsaying
5:39 PM - 14 Nov 2011
 
Twitter
Strong As Meat
‏@StrongAsMeat
Always give 100%. Unless you’re donating blood.
5:47 PM - 14 Nov 2011
   
Twitter
🇹🇷 KIᑎG ᗩᖇᗩᑎ  👑
‏@AranSuleyman
Whatever you do, always give 100%. Unless you’re donating blood!
5:54 PM - 14 Nov 2011 from Bromley, England
 
Twitter
Graham Martin
‏@gramartin
Whatever you do always give 100%
Unless your donating blood.
6:22 PM - 14 Nov 2011
   
Twitter
Kieron
@kieronwilson
Whatever you do, always give 100%. Unless you’re donating blood .. http://www.sickipedia.org/joke/view/1144165 …
8:19 AM - 15 Nov 2011
 
13 May 2012, The Province (Vancouver, BC), “Morning Briefing” by Bob Krieger, pg. A44:
Bumper sticker, as spotted by Short Rutts blogger Michael Higgins: “Always give 100%, except when donating blood.”
 
Google Groups: CS21032012 - Wimpy Technologies
Test sending email to group
Greg Heffley
8/7/12
Cheers
- Greg
Whatever you do, always give 100%. Unless you are donating blood!
 
Google Books
Top Tips a Guide for Life:
Top Tips For Unlocking Your True Self And Becoming the Best You Can
By Sean Purdy
Bloomington, IN: Booktango
2014
Pg. ?:
Whatever you do always give 100%, unless you’re donating blood.
 
Google Books
From the Outside Looking In:
A Boomer’s Memoir
By R. Winston Carroll
Bloomington, IN” iUniverse
2016
Pg. ?:
Whatever you do, always give 100%, unless you’re donating blood.