Used when someone is blocking your view of something. In layman's terms, it means 'Move!'. Its origins come from the physics term 'delta-x', which indicates a change in displacement (ie. movement from one position to another)
*Rednuts stands in front of whiteboard*
Ratrick: Hey Rednuts, delta-x.
Rednuts: delta-x, what?
Another name for a BSOD (blue screen of death), a term used to describe a fatal error in MS Windows. It represents a way of pronouncing it phonetically, but can also be used in textual form, usually to convey leetness.
Billy: "I don't like this computer, it's too unstable. I keep gettin these beesodds"