The shinbone is a device for finding furniture in a dark room.

This is a modern, anonymous piece of folk humor—often circulated as a one-liner in joke collections, email forwards, and online quotation lists—riffing on the experience of walking through an unlit room and colliding with furniture. It belongs to a family of “mock-definition” jokes that treat a body part as if it were an engineered tool, turning a minor household mishap into a wry observation about human anatomy. Because it is typically unattributed and appears in many informal venues, it is best treated as a floating aphorism rather than a remark traceable to a single speech, publication, or identifiable author.

A piece of wry, observational humor: it reframes an everyday mishap—banging your shin on unseen furniture while moving in the dark—as if the body part were purpose-built for that “task.” The joke relies on mock-technical phrasing (“a device for finding”) to turn pain into a kind of accidental navigation system, highlighting how humans often discover obstacles only through unpleasant contact. Like many anonymous one-liners, it functions as a small comic consolation: the sting becomes evidence of a perverse utility, and the speaker’s frustration is converted into a memorable, shareable aphorism.

1) "The shinbone is a device for finding furniture in the dark."
2) "The shin bone is a device for finding furniture in a dark room."
3) "A shinbone is a device for finding furniture in a dark room."