In the Infocom-produced Hitchhikers Guide to the Galaxy, the player must enter his/her own brain and navigate a maze, in search of the Common Sense Particle, finding where it is lodged in this brain, and get rid of the blasted thing.

Then the player may return to the Heart of Gold and, without hindrance of Common Sense, hold “No Tea” and “Tea” simultaneously in inventory.

But that is just a computer game!!!