Though the term originated to refer to food, it is now expanded to anything that is available for use by anyone, for example, food, blankets, books, and penises.
Origins: Onomatopoeic word describing a fart that starts with a short, low musical note, followed by a more prolonged, muffled “fffffh”, usually achieved by sitting on office furniture.
"Never read the manual, it's usually just guff in twenty languages."