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?
Ratrick: MOVE!
Ratrick: Hey Rednuts, delta-x.
Rednuts: delta-x, what?
Ratrick: MOVE!
by Krooga July 8, 2005

A X-nerd is a person who is totally obssess with X-men. They are really nerd and always drag X-men into any conversations. There faveourite movies are any of the X-men movies. They will kill you if you drag reality into a conversation.
Availible with or without rabies.
Availible with or without rabies.
by Jazmyn Wagner August 26, 2010

i love him x-zillions
by cool.beans May 17, 2009

by Sir Saula August 11, 2008

someone whose front 2 teeth are crooked and point towards one and other, it looks as if the teeth continue to grow they would cross and make an X on the persons chin
by John Detlor May 22, 2007

To close a computer program. Refers to the fact that on computers, the button to close a program is represented by an x. Usually used by people who don't know much about computers to begin with.
1: "Ok, now I'm supposed to x out of internet explorer?"
2: "Yes. But get firefox, for the love of god."
2: "Yes. But get firefox, for the love of god."
by Cobrabb July 13, 2010

by mrmiamian November 10, 2003
