1) An emoticon, with ones eyes crossed and tongue sticking out. Obviously this means "retarded."
2) The most recent edition of the Windows OS, recognizable by the GUI that looks like it was made by Playskool, and the code that was probably written by same. The OS was named for said emoticon.
3) Short for Experience in many RPGS. Variant of EXP.

An emoticon that signifies "laughing really hard while sticking out the tongue."

See also: XD

Abbreviation for 'XPISTOS', Greek for Christ.

An abbreviation for 'experience' in the context of role playing games, usually given in a point value and used to determine a character's level.

1) Short-hand version of "Windows XP," one of Microsoft's operating systems for PCs.

2) The first two letters of the Greek word XRISTOS, Christ; -- an abbreviation used with the letters separate or, oftener, in a monogram, often inclosed in a circle, as a symbol or emblem of Christ. It use as an emblem was introduced by Constantine the Great, whence it is known as the Constantinian symbol, or monogram.

A random symbol that Eric Simeonoglou likes add at the end of every sentence.

xP is usually used when texting sms's or mail's to say that you are kidding about something,that you did something better than your interlocutor... xP