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Used colloquially as the opposite of On Fleekderived from the root word being 'Bleak' which means : charmless, inhospitable and dreary. Can be used to describe the weather I.e a cold and miserable day or just basically anything that is bland and or depressing. Anything that is not good, sucks balls you get the point.
Yo! Did you catch that last episode of GOT that shit was 'On Bleak'!

"OMG did you see what that bitch was wearing?! 'On Bleak' AF!
by Celina18 May 25, 2015
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