Top Definition
An acronym for My Body Is Ready. Something you say when you see someone who is overwhelmingly attractive and would like to partake in sexual activities with them.
Person 1: Have you seen this picture of Cristiano Ronaldo? *shows picture*
Person 2: MY BODY IS READY.

or when not appropriate to say "My body is ready" out loud, one would say "MBIR."
by wet paint June 13, 2011
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