“Brunch is breakfast without an alarm clock”

“Brunch is breakfast without an alarm clock” means that brunch is breakfast for someone who woke up late (without an alarm clock). “Brunch is breakfast without an alarm clock” was posted on Twitter by Janelle (and several others) on March 15, 2012.
   
The saying probably originated with this image from zulily.
 
     
Twitter
Janelle
@Jane1le
brunch is breakfast without an alarm clock
2:39 PM - 15 Mar 2012
   
Twitter
Karen
@popandfizzATL
Brunch is breakfast without an alarm clock.
2:47 PM - 15 Mar 2012
   
Twitter
Sam
@samcljones
brunch is breakfast without an alarm clock
3:36 PM - 15 Mar 2012
   
Twitter
Evann Lepro
@evannlepro
Brunch is breakfast without an alarm clock. http://pinterest.com/pin/197736239859257591/ …
10:54 PM - 15 Mar 2012
   
Twitter
Bywonderland.com
@by_wonderland
Brunch is breakfast without an alarm clock 😊 http://pinterest.com/pin/270638258827342846/ …
3:39 PM - 16 Mar 2012
 
Twitter
Sarah Vickers
@SarahKJP
Brunch is breakfast without an alarm clock
10:46 AM - 17 Apr 2016
     
Twitter
Stella Southern Cafe
@StellaBiscuits
Brunch is breakfast without an alarm clock. ⏰  #honorthybiscuit #StellaMugshots
📸 IG: cloud_david
10:00 AM - 7 Dec 2018
 
Elite Daily
55 Clever Captions For Christmas Brunch That You’ll Love A Waffle Lot
BY RACHEL CHAPMAN
December 11, 2018
(...)
19. “Brunch is breakfast without an alarm clock.”