"Quone"

Non-existant word used by Seinfelds mother in a game of Scrabble:

"Jerry: 'Quone'? No, I'm afraid that I'm going to have to challenge that.
Helen: ...32...
Kramer: No, you don't have to challenge that. That's a word. That's a *definite* word.
Jerry: I am challenging...
Kramer: Quone: to quone something.
Jerry: Uh-huh... "

Re-watched one of my favourite Seinfeld episodes and now I'm stuck with this damn word.