It means "Blog My Life"
When you write about your stressful, crazy, confusing, or crappy life in online blog entries. Usually to get out the frustration or anger somewhere safe (there's an oxymoron, safe internet.)
A BML would look like:

"I was so upset when he didn't ask me out last night.
He sounded like he was going to and then...
Nothing! Ah!"

Used in Conversation:

"What a crazy day, thank god it's over! When I get home I'm going to bml."
by holyfrikkincrap June 4, 2009
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A group of young go-getters from around BALTIMORE maryland. They are mainly black orientated and ruthless.
Man i wish i was bml
by Bml4lyfe March 12, 2018
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ugh ur so hot pls bml
by liltitgang March 26, 2019
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A small creature generally found belonging to a Citz.
I found me a BML the other day.
by L.J. September 16, 2003
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