1. A four dimensional surface upon which existentialists, anti-humanists and physicists release their frustrations.
2. Any person used by existentialists, anti-humanists and physicists for the same purpose.
3. A favorite utensil used by Sadomasochists.
Nora was so frustrated with the pathetic incompetence and pointlessness of humankind which she clearly saw reflected in her own fault-riddled being, she felt like banging her head against the counterwall.