just excited

okay im so confused. I saw those posts saying that if you "dirty rush" other sororities will cut you. Can someone explain dirty rushing?? I saw also that they're looking at which sorority girls pnm's are following on insta, and how they're gone after open house. I follow a couple, from all different sororities... not just one. Im not trying to "dirty rush" i'm just an excited freshman who follows anyone with baylor in their bio :(. is it true? should i unfollow them? or was that just to scare me