1. A sexual situation wherein a woman is taken home by a man and blindfolded. The man then removes the blindfold to reveal his friends standing around her in a semicircle.
2. A Brigandine tactic where Dryst gets Dimensioned into a circle of hydras, whereupon he gets the beatdown.
The college dropout rate for females is rising severely, due in no small part to the rising popularity of the hydra surprise.