Toilet paper with only one "ply," or layer of thickness.
A horrible and insidious mockery of a perfectly wonderful consumer product. Makes you feel cheap, tawdry, abused, fearful, ugly, smelly, dirty, etcetera etcetera. Removes all trace of human dignity. Leads to loneliness, depression, and suicide.
Most frequently found in institutions which are grasping desperately to save money by abusing and lowering the self-esteem of their customers as much as possible, like colleges, high schools, and government offices.