After taunting O-Girl about her situation Hypnotika and Trance leave to a different room to watch a monitor showing a live camera feed of O-Girl's impending doom.
Hypnotika then decides to leave to attend to other business, and tells Trance not to enjoy too much of the video feed as it would be more pleasurable if they were to watch it together later.
This trap is a glass box with sand pouring in which will eventually drown the bound O-Girl when it gets above her head.