Cruft

Cruft is a generic term for specimens of code dubious to the point of simultaneously inducing nausea and fascination. It frequently, but not invariably, refers to something that's "been in there so long everybody's afraid to touch it" because doing something about the obvious cruft might easily break four other things that have come to depend on its quirks. (Derivation: think "crust", with a 1700's-New-England-style cursive s that looks like an f.)