Someone who says that he/she will hang out with you, but then cancels at the last minute.

Someone that you made plans with, but then that person changes his/her mind when you've been waiting all day.

Someone that you plan on meeting, but then that person doesn't hit you back until the next day, saying "hi" like everything is alright or some s*** like that.
Sarah: Yeah, we can hang out tonight after I get off work at 7 PM. :)

Me: Alright, cool :). Just let me know where you want to meet.

*8 PM*

Me: ?

Sarah: Oh sorry, I've just been so busy today. Can we hang out next time?

Me: No. F*** you b****. Wasting my goddamn time. I hate people that flake. Say something if you can't hang out with me so I can do other s*** and not waste time seeing what's up with you.
by Ihateflakes October 19, 2012

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Someone who doesn't have the balls to tell you they're busy and can't hang out, but still makes plans to 'chillax' so you go out of your way to 'chill' with said flaker, only to have them flake out on you, and then give you some lame ass no ball excuse instead of just being straight up that they're a flakey flake
Per Wall 'Wanna hang out'
Dumb Girlfriend 'Hehehe OK'
Dumb Girlfriend at meet spot, No Per wall at meeting spot

Per Walls Dumb excuse 'I was skateboarding'

Dumb girlfriend crying on phone to friend 'He is such a flake'
by Dumb Girlfriend April 08, 2009

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A confusing/disappointing person whom you have misjudged as a reliable, caring friend. She can call and talk for hours about herself but the minute you speak of yourself she has to get off the phone. She asks for favors and, even if you set parameters to which she agrees at first and promises she'll abide by them, she'll use them later to excuse herself from the scheduled activity. She'll pick your brain and take the credit for your originality. She will amplify her competence. She will lie to avoid confrontation and make herself the victim when confronted. In order to quit being disappointed, I never make any plans again with the Flake.
Flake: Would you come over and help me with my riding?
Me: Okay but I will need a ride there and home.
Flake: Sure, no problem.
Me: Okay, see you tomorrow at ten.
Tomorrow at ten comes and goes. She texts me five hours later saying she had to go to the dentist. In the meantime your other friend calls to say she went riding with the Flake during the time the Flake was supposed to be at the dentist.
by christy2011 April 27, 2011

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A flake is a friend who makes plans and does not attend the date. Or someone you can't rely on.
Ashley was supposed to call me yesterday to make a time for that playdate, but she flaked out, what a flake.
by Roxapebble May 16, 2009

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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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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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A way to describe just a little bit of snow falling, i.e., you could count the individual flakes.
News anchor: "Are we getting a lot of snow tomorrow?"
Weatherman: "Nope, just a few flakes."
by forteblast January 02, 2011

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