"I thought I understood z-plurals: they indicate something which is both youth-oriented and extreme. So, while 'tea cozies' are something cherished by old ladies wearing shawls, 'tea coziez' are all the rage among adrenalin-infused, rapping, snowboarding youth who may or may not be wearing 'shawlz'."
— Lore Sjoberg, The Book of Ratings
Wave Runner: Power-Links?
Starscream: No, it's Powerlinx, with an X. Everything's more impressive with an X.
— My Little Transformer, episode 76
Because poor literacy is KEWL.
Have you taken note of the fact that every prescription drug has an "X" or a "Z" in the name? You know, Vioxx and Paxil and Oxycontin and Celebrex and Fosamax and Prozac? But, uh, are Americans really that dumb? That all you have to do is put an "X" or a "Z" in the name and they go "Well, I'm not a doctor, but I can see this is serious medicine"?
—Bill Maher, The Decider
"With the X, I know what you are thinking. It's a marketing thing. You see, I wanted to call the show Going to Other Planets, but research says that shows with X in the name get better ratings."
H. Star: Xeriouxly Forxe!! (beat) Did I say that right?
"The X stood for “eXtreme” and web developers were required to cross their arms in an X shape when speaking the letter."
"Call me crazy with a K, but didn't we see him die?"
-Johnny Cage, Mortal Kombat 9
"All societies live by one simple rule: Calling yourself 'extreme' is fine if you're wheeling down some kind of ramp, but if you're just a trail mix or a Cheeto, fuck you."
Bender: There's nothing wrong with murder, so long as you let Bender wet his beak.
Leela: You're blackmailing me?
Bender: Blackmail Is Such an Ugly Word. I prefer "extortion." The "X" makes it sound cool.
—Futurama - Anthology of Interest