A prank that parents play on their children when they’re old enough to drive. Blinker fluid/fuel is not real but is a common joke, most shop owners play along or will laugh at you.
Run down to the auto parts store and get me some blinker fluid”, but when Billy went to the store the managers just laughed at him.
by Hardtruths January 2, 2018
Get the Blinker fluid mug.
A specialized transparent liquid used to lubricate the moving parts of a turn signal. Despite what other answers might tell you, it is absolutely not a joke.
"Man, these are the worst flashers I've ever seen. When was the last time you changed your blinker fluid? Oh, you didn't know that was a thing, well the repair's going to cost you pretty big." - My technician
by sidhe3141 May 3, 2023
Get the Blinker fluid mug.
An imaginary liquid used in automobiles (to make the blinkers work). This term is used as a sarcastic remark toward someone who knows ablsolutely nothing about cars.
Bob: "My car's broken again. I don't know what's wrong."
Jon: "Did you check the blinker fluid?"
by Peaches Witherspoon August 23, 2005
Get the blinker fluid mug.
A sarcastic term used to ridicule those who don't know shit about cars. Similarly 710 cap and Muffler Bearings are used in this way.
"You need some blinker fluid for that?" Asked Tom.

Darryl, who knew nothing about cars and was knee deep in his truck trying to fix a broken radiator, replied "I don't know, I might."
by John4646 June 6, 2018
Get the Blinker Fluid mug.
(btw i totally met a girl who fell for this)

a really good almost-real-sounding term to use with the intent of throwing off a ditz.
Crystal: "My right blinker doesnt work."
James: "You're probably out of blinker fluid."
(later at auto zone)
Crystal: "I would like to buy some blinker fluid, please."
Clerk: "What the hell??"
by jackieshmackie March 14, 2006
Get the blinker fluid mug.
An imaginary fluid in cars which enables the turn signals to work.
Aggrivated Driver: This asshat keeps changing lanes without using his signal!
Sarcastic Wife: He must be low on blinker fluid, honey.
by Merkle March 13, 2006
Get the blinker fluid mug.