The act of blowing off a friend or acquaintance, When someone creates a believable scenario of intentions to meet up and fails to, or purposely declines to show up, Standing someone up, or the means of severing a social connection like a friendship.
Person1: gee, hav'nt heard from dexter in like two weeks... think he's dead?
Person2: Not sure, he always flakes out on you unless you agree to meet up on his terms.

Person1: hey man, wanna go get schwasted tonight?
Person2: yeah, I was supposed to meet up with that creepy guy later, but i'll just be flaking out on him, now won't I?
by theNEWROMANTIMES February 7, 2010
Verb: To cancel previously agreed upon plans last minute, or simply not show up

Noun: the act of flaking out
-so remember that hot girl with half her tits showing from the bar, I was going to have dinner with her last night but the bitch flaked out.

-hot girls are flake outs as a general rule, it's supply and demand man.
by s. mooth criminal September 17, 2008
To cancel previously agreed upon plans last minute or just not show up.
I can't believe he would flake out! He said he would vote to advance Kavanaugh's nomination to the full Senate, however he just announced that he would support the nomination only after a delay of one week for an FBI investigation.
by GEK September 28, 2018
Dissed, got dissed, didnt get hit up as told.
Dissed on, not coming through.
"Man, I hit up both them fools to go to the party but like always, they done flaked out."

Where were you? I hit u up to chill and just flaked out on me, puss!

This chick offered me some dome, but she later flaked out.
by JayyFukk09 August 27, 2015
When one can no longer participate in the social activities of his or her peers, and willingly removes themselves from the group activity or forfeits the activity without an amicable agreement.
Going out for a drinking session with friends and 'Roy' Flakes Out, by opting to stop drinking and go home early. This person would then be referred to as: Flaking out, Flaker, Corny, Flaked Out, Flakey.
by urbangenerator222 February 24, 2013
deciding not to do something, sometimes because you’re scared.

Named after Jeff Flake
Jeff Flake could’ve done something historic for America and women, but he flaked out.” -flaking out