x country 

Often associated with great pain, this incredible sport involves running over long distances, usually not on paved roads. The average x country runner has a love-hate relationship with the sport, as it is difficult yet rewarding.

X country is all other sports' punishment.

x country by thedrownedgod October 20, 2013

X-plane 

A flight simulator better than Infinite Flight.

I'm going to play X-plane 11 later, provided my evil teacher does not give me a crap ton of homework.

X-plane by Yi Yong Chen May 19, 2018

[x-mas] 

This is an abreviation of the word christmas. Generally used by people who are to god damn lazy to write the full word.

x-mas is possibly the best time of the year!

[x-mas] by Jessica Stephens March 10, 2004

x chromosome 

Chromosome which is found in both males and females. XY = male. XX = female. Sperm can be either an X or Y chromosome. During fertilization, if the Y chromosome sperm reaches the egg, then the baby is a boy. If the X chromosome sperm reaches the egg, then the baby is a girl.

Think of it as females having two copies of the same CD music album in every cell in their body, while males have one copy of that album in every cell in their body(x chromosome) and an extra single CD (the y chromosome) also in every cell in their body.

Even if the y chromosome was suffering from genetic degredation(which it is not) the effect could easily be reversed by genetic engineering.

x chromosome by John Ronane April 8, 2004

X-TREME 

One better than "Extreme". Only those willing to take things to their furthest would dare do something so extreme that the "E" at the start of the word is too shit scared to stay and watch, running home to it's mum.

Dude A: "I'm gonna go to bed. Good Night dude."

Dude B: "I'm going to go to bed TO THE X-TREME!!!!!"

Dude A: "Grow up."

Dude B: "I'll grow up, grow up TO THE X-TREME!!"

Dude A: *sigh*

Dude B: *sigh "TO THE X-TREME!!"

etc.

X-TREME by Ian "The Main Man" Mckenna April 21, 2005

X-Raided 

X-Raided is one of the hardest musicians ever. He raps like a maniac and doesn't care what he says on record. His lyrics are insane and anyone who can ever rap like him again should be congratulated. Not to mention his brother...Brotha Lynch Hung who obviously got his inspiration from his gangsta brother X-Raided.

"X-Raided from Prison"
Their aint no motha fucka in the whole wide world with a bullet proof forehead.

X-Raided by staright locsta from WV April 13, 2006

X-Cup Minefield 

(n.) In the 10-cup, "Beirut" variation of Beer Pong, the X-Cup Minefield (where X is equal to the number of remaining cups) is a re-rack called at any number of cups in which all remaining cups are arranged randomly spaced throughout the side of the table. Considered the boldest call in all of Beer Pong

I'm feeling ballsy, guys. Let's get the X-Cup Minefield.

Dude, did you see the game when Eric called the 10-Cup Minefield? He didn't win, but it actually came pretty damn close. Zack had nothing to do with it.

X-Cup Minefield by TheLoudestFan April 22, 2009