mierp Posted in M Best definition mierp used when bored and there is nothing to do;can only be used by aawsome passumes. jerry:OMG!!!!im freakin aawsome passume karen:awkward silence… jerry:MIERP!! How satisfied are you with the definition? Looking for mierp meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 43 times.