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

[kitkatcookie]

[name_f]Selah[/name_f]

[name_f][/name_f]

[name_f]My[/name_f] nickname is [name_m]Drew[/name_m], but it’s not short for [name_m]Drury[/name_m] or [name_f]Drusilla[/name_f], it’s short for ____