Top Definition
A high school mixer at St Joes Prep High School in North Philly. Specifically for incoming freshman, the prep mixer is a dance for prep boys and surrounding sister schools. All other boys schools are jealous they can't go because all the hot girls talk about it.
Notre Dame Girl: OMG ARE U GOING TO THE PRIXER ??(Another name for Prep Mixer)
Merion Mercy Girl: YESSS I CANT WAIT.
Sacred Heart Girl: Sucks for all the Malvern Boys who cant go!!!! Its gonna be a party!!!!
by NDAGIRLFORLIFE September 14, 2013
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