There is/was a chapter that throws glitter on the PNM's that they want as they are leaving the pref party. The glitter is VERY hard to get off. This PNM is now "marked" so that the other chapters that she is attending for pref know "where" she is "probably" going on bid day. They were asked to stop doing this by PanHellenic but Im not sure if they did..it's another chapter with deep pockets who are willing to pay the fines and move on
The Piggy Back house actually Piggy Backs girls out of the house that they want. It is obviously very hurtful to the girls who are not piggy backed out.