Photographers use this word as shorthand for "Straight Out of Camera". This refers to NOT using Photoshop or any image editing software as of yet. Often used online and not in real life, to give quick information to other photographers.
Tim: Awesome picture Steve! Is that Photoshoppped?
When wearing a large threaded sweater of long sleeve shirt of some sort and after a while with weight on the elbow area, the skin on and around your elbow has thread lines imprinted in it. Usually accompanied with very slight pain/discomfort.
Carolyn: "What is with your skin there?"
Allen: "Oh, it's this sweater, it gives me bad thread elbow"