My nickname is X, but it's short for Y, not Z

[lilyofthevale]

[name_f]Joanna[/name_f].

[name_f]My[/name_f] nickname is [name_f]Katie[/name_f] but it’s not for [name_f]Kate[/name_f] or [name_f]Katherine[/name_f], it’s short for…