mbrn Posted in M Best definition mbrn Abbreviation for my brain right now- signals tiredness of the mind Ã¢ÂÂOmg Kourtney, mbrn I can’t even!Ã¢ÂÂ Shouted Kim over the speakers. Ã¢ÂÂYa Ik totes cray cray up in here,Ã¢ÂÂ replies Kourtney How satisfied are you with the definition? Looking for mbrn meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 35 times.