This meaning is implied when you make the victory/peace sign, followed by cupping your index and thumb in the shape of a letter 'C'.

Instead of saying something is good, awesome, excellent etc...use the too cool sign to express your feelings nonverbally.
When the girl in the car next to me lifted up her shirt to expose her mommy baggies, I quickly gave her the V C symbol to express my pleasure and how cool she was.
by DeeJay December 12, 2003
Get a Too cool mug for your cat Julia.
if someone says something boring, and you have no other way to respond. usuaslly used over text as sarcasm that the boring people don’t get
“my favourite food is pasta

you: “too cool”
by hedgehogsarevsnazzy July 12, 2020
Get a too cool mug for your father-in-law Georges.
two unique people who are wayy cooler than other people. and those people are hannah and laura
they are just too cool
by elkayyy December 09, 2007
Get a too cool mug for your friend Nathalie.
A state in which a person thinks him or herself superior to everyone else in a given group or in general. Generally used sarcastically.
Ben Stiller: "You may think you're too cool for school. But I got a news flash for you...you AREN'T."
(Zoolander)
by Nick D November 03, 2003
Get a too cool for school mug for your cousin Riley.
A phrase originating in the 1960's Counterculture.

It describes a person who has "tuned in, turned on and dropped out." In other words, it describes a person who has submerged themselves so much in the Counterculture (fully embracing a wide range of drugs- particularly psychedelic drugs, communal lifestyles, anti-materialism, radical politics, anti-authority and particularly anti-Police attitudes, alternate codes of dress and personal hygiene and often anti-social behaviors), and is thus "so cool," that they are largely unfit for and unable to participate in conventional society.

The phrase was invariably complimentary.

More recent usages tend towards extreme forms of irony. Often applied with considerable sarcasm as a form of insult it generally means a person who is deemed to have an inflated self-image. If the person displays any actual Countercultural leanings, they tend to be of the most mild possible variety.
"Dude, the Hells Angels are totally righteous. They're so out there, man, they're, like, too cool for school."

"That kid didn't come to my party. What does he think he is, too cool for school?"
by The Egoist December 30, 2009
Get a Too Cool for School mug for your friend Manafort.
1. Overconfident, cocky, sadiddy or conceited.

2. Believing that you know everything to the point to where it can harm you or work against you.

3. To be too smart for your own good or too smart by half, meant either literally or ironically.

4. To be in a state in which you think you’re better than anyone else in general.

NOTE: AS AN IDIOM, IT IS SARCASTIC.
Sadiddy people are usually too cool for school.
by Mr. Terrence L. Trezvant July 10, 2008
Get a too cool for school mug for your fish Georges.