In the Red Dwarf episode "Bodyswap", originally broadcast on BBC Two on 5 December 1989, Lister (who has temporarily swapped bodies with Rimmer) and Cat are playing a game of Scrabble:
CAT: Hey-hey-hey! I've got you now, buddy! [He holds up his letter rack.] J-O-Z-X-Y-Q-K.
LISTER: That's not a word!
CAT: It's a Cat word!
LISTER: "Jozxyqk"?
CAT: That's not how you pronounce it!
LISTER: What's it mean?
CAT: It's the sound you make when you get your sexual organs trapped in something. "Jozxyqk!"
LISTER: Is it in the dictionary?
CAT: Well, it could be. If you were reading in the nude and you closed the book too quick. [He mimes this.] "Jozxyqk!"