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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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May 12 Word of the Day
When someone goes to the gym and spends 90% of the time on their phones scrolling through social media
Looks like its thumb day again for Jimmy with his usual routing... 3 sets of 5 snapchat selfies and 10 sets of scrolling through facebook until exhaustion
by Gary br April 02, 2017
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Somebody who almost never follows through on their word. A true flake will tell you they'll "Totally come" to an event that you put endless effort into organizing up until the day before, and then the day of the said event they're not showing up nor answering your calls or texts. These types of people are the masterminds at taking advantage of your kindness. Their constant flaking out not only succeeds in blatantly using you for your known kindness. No. When you see people flake on you, it makes you feel bad about yourself wondering what you did to make them do something like that. Flaking out subtly says "My time is more important than your time" or, better yet, "Your time don't mean shit to me." Flakes are unneeded negative energy in your life. It is recommended that you keep contact with these selfish pricks to a bare minimum, if at all.
"I have zero tolerance for flakes. Nobody will take advantage of me like that."

"That flake bailed on me at the last minute!"
by BassDude July 19, 2014
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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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Someone who agrees to do something, than leaves right at the last second. Aka Jaden
Wow, Jaden is such a flake, he always agrees to something , than leaves at the last second. Flake
by NS09 August 29, 2015
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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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(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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