Beta Delta Mu
A group of girls that were to intimidating to a bunch of thirty year old women so they decided to shut them down and restarted as beta delta mu.
Guy 1 - “ aye I heard your girlfriend is into BDSM!”
Guy 2 - “Nah man she’s in BDM (beta delta mu)!
Guy 2 - “Nah man she’s in BDM (beta delta mu)!