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n. An unreliable person; someone who agrees to do something, but never follows through.
1. John called in sick to work again today. He's such a flake.

2. Mary said she would do the research for our project, but it's been a week and she hasn't done a thing. She's such a flake.
by Gargouille May 29, 2005
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2
(n) A useless, shady, deceitful person who is so unreliable and selfish they cause you much anger and frustration. A Flake's only agenda is what they want to do. They have a weak character, often the products of bad parenting/spoiling kids. A Flake will make plans, never attend, and give no reason for their absence, even after they spent hours calling, texting, or emailing you. Flakes try to manipulate everybody, and sometimes are not the idiots they appear to be. A Flake often has little to no real friends due to their erratic behavior. You can never rely on a Flake. When questioned about their behavior, a Flake just gives up on the relationship and moves on to another person. Flakes can't get by in the real world and often act immature beyond their years, causing them to be labeled as "useless" human beings.
This girl called 15 times in one day and we decided to go out that night with some other friends. She arrives at the our meeting point, walks right by me like she doesn't know me, sits down with somebody else, and then proceeds to leave with them. Then, she stops answering her phone even though I know she sees my calls. A week or so later, she calls me again because she has nobody else to hang out with and wants to do something. However, she avoided all my phone calls for a week. Then she got mad when I confronted her about it. That's when I understood why people used to tell me she was "a useless flake" who still lives at home with her parents. When she was mentioned in a conversation someone always used the word "flake" in there somewhere.
by DirkDiggler88 August 25, 2009
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3
A flake is someone who generally makes plans with you, promises to do things with or for you but can never seem to follow through. When confronted with their behavior they usually get defensive and run away.
Jane doe promised to go out with me. She never showed up. We made plans saturday night and she came up with an excuse why she couldn't show up. Jane is a flake.
by rubberjohnny7 March 13, 2011
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4
(verb, oftenly used with "out") - To decide not to go at the last second; To "ditch" or "bail out."
"You said we were gonna go see the movie! Don't change your mind and flake out!"

"Damn, it's been an hour since we were supposed to meet. I bet she just flaked out on me."
by Patrick March 18, 2003
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5
we knew chris wouldn't show up 'cuz he's a flake.
by baron S July 20, 2005
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6
hey we going to get some flake for your birthday lad, its well strong but its pricey a hundred quid a gram
by merlin sheets March 15, 2012
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7
A so called friend who is constantly unreliable and shady. A flake is someone who can think up an excuse for everything but their own existence. The behavior that a flake exhibits is a product of their own desire to manipulate people. A flake will find reasons to ditch a friend whenever that person wants to do something that is not on the flakes agenda. They are insidious beings they do not exhibit this behavior when you first meet them but usually much later down the line. A true flake is not the idiot that they would have you believe.
Bob secretly does not like opera, so he tells his friend to buy the tickets anyways and then does not show up. He calls the friend at the last minute and says he must study for a test. Of course it's the middle of summer vacation though, what a flake.
by JJCarnegie April 16, 2009
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