This can be any cuss word. X means it can be F, B or anything.
Bill: Oh FUC*!!
John: You said the X-Word!
by Growit5inches4free October 04, 2011
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A made up word used to trick stupid 6th graders.
There is not an "X" word but you can get them so pissed at you. It works best if you get alot of people in on it and act serious like it's a super bad word.
Bob: Hey Whitney have your parents told you the x word yet.

Whitney: No whats that ?

Bob:What ... hey guys Whitney doesn't know the x word.

Everyone: He doesn't ?
by whaleblubber13 May 17, 2011
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