A visually attractive person who is both uninteresting AND unreliable, specifically in the context of dating/hook-up apps.
Friend 1: "So I was chatting with this really cute person online, but they seemed a little dull and distracted, and then they ghosted me."
Friend 2: "Gurl, sounds like you were chatting with a bran flake, pay them no mind!"
Friend 2: "Gurl, sounds like you were chatting with a bran flake, pay them no mind!"
by easy_eh May 13, 2023
Get the Bran flakemug. After intercourse of two people of the opposite sex have intercourse immediately after then wake up to crusty white spots on their groins when they wake up, when trying to remove the dried up bodily fluids they flake off like dandruff
by Margo009 January 24, 2021
Get the f*** flakemug. 
An unreliable person; someone who agrees to do something, but never follows through. Usually cancels last second or doesn't show up at all and doesn't answer your calls or texts.
by worguy1748 May 24, 2020
Get the flakemug. by Lisa g unit January 11, 2020
Get the Flake Starmug. Much like the chocolate bar, a flake is someone who pulls out of plans and lets you down. Your plans then crumble like a flake. Eventually you'll notice they slowly but surely disappear entirely from your life.
I've had several flakes in my life. It's so disappointing that people replace eachother so easily now.
by Xavier Exotic August 25, 2021
Get the flakemug. by Pedro correa January 13, 2018
Get the mamo flakemug.