nagled - A letter used in place of any other word, like a wild card i

A letter used in place of any other word, like a wild card in a game, but only used by lazy kids in Delaware who have nothing better to do.

He used an ‘X’ in his math problem, that was a nagled.

My friend used a ‘Z’ in his spelling test, that was a nagled.

She used a ‘Q’ in her sentence, that was a nagled.