Top Definition
CFBM refers to, when you receive a load of Facebook emails. Either about crappy information, like being tagged in a photo and all the comments you receive after. Crappy Facebook mail.
Sandra: " Erh, I cant stand all this CFBM I get everyday it is so ridiculous. "
Andrew: " You should see what I get, I get more then 200 a day! "
by Sqamuel. November 04, 2009

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