Now | [s5e24] Both Sides

In the House M.D. episode "Both Sides Now," the "useful paper" refers to a napkin House believes is stained with lipstick, serving as hallucinated proof of a relationship with Cuddy. This object highlights House's severe psychological breakdown, forcing him to recognize his addiction and enter a psychiatric hospital. For more details, visit the Caretaker Fan Projects Wiki. A Teardown Of My Life: Regular Edition