(General talk about) jokes and humour

[Farseer]

well, it aint a joke, but its a riddle...

"I am colored red and blue and yellow and every other hue of the rainbow. I am long and short, thick and thin, and I often rest coiled up. I can eat a hundred sheep in a row and still be hungry. What am I?"

Please, no using search engines to answer it...

Ah, from someone who grew up on a sheep station, the first thing I thought of was wool or balls of wool...maybe even on a spindle or a spinning wheel (which could sort of be said to 'eat' the wool/sheep?) ?