“Coffee (n): break fluid”

“Coffee” has been defined as “break fluid”—a pun on the terms “coffee break” and “brake fluid.” The saying is sold on coffee mugs (of course) and has been cited in print from the 1960s and 1970s.
 
“Coffee (n): an attitude adjustment in a mug,” “Coffee (n): survival juice” and “Coffee (n): the person upon whom one coughs” are other definitions.
     
 
zazzle.com
Coffee, n. break fluid.
Mug by aleen27
   
20 May 1965, Newport (RI) Daily News, pg. 5, col. 4:
“A small coffee shop near several service stations advertises ‘Coffee Break Fluid.’”
       
Google Books
Dictionary of Quotable Definitions
Compiled by Eugene E. Brussell
Published by Prentice-Hall
1970
Pg. 92:
COFFEE
Break fluid.
R. R. Anderson
   
14 December 1975, Lebanon (PA) Daily News, Family Weekly, “Quips & Quotes,” pg. 19, col. 3:
Coffee: Break fluid.—Dorothea Kent
 
28 April 1977, Robesonian (Lumberton, NC), pg. 2, col. 7 ad:
When you need to stop, you should have good break fluid! The right fluid for your every break is Hanka Coffee!
 
31 December 1984,

(Santa Fe, NM), “Jumble,” pg. A8, col. 4:
What coffee often is—A “BREAK” FLUID
 
Coffee Moments
Coffee, n. break fluid. ~ Author unknown. Because workaholics need a break, too. (Or at least, an attempt at one ...)
(This blog began in August 2008—ed.)