hungry puppy = H = hyperspace

hungus /huhng'g*s/ adj.

[perhaps related to slang `humongous'] Large, unwieldy, usually unmanageable. "TCP is a hungus piece of code." "This is a hungus set of modifications." The Infocom text adventure game "Beyond Zork" included two monsters called hunguses.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.