disappearing act

Reader's Digest　２月号のクイズ、HIDDEN MEANINGをもう一つ紹介します。
それはACTの単語が半分隠れた状態で表記されています。さてこの隠れた意味は何でしょう？
答えはDisappearing actとなっていました。それはその通りですが、この表現には何か特に意味があるのでしょうか？　辞書でDisappearin actの意味を調べます。
・Oxford English Dictionary: An instance of someone being impossible to find, especially when they are required to face something unpleasant.: Nobody is questioning he is a quality player, but he has done a couple of disappearing acts in the past.
・Dictionary.com: an instance wherein someone is impossible to find: Oliver understood the disappearing act of Tommy My-Ma, he thought.
"do a disappearing/vanishing act" は慣用句と考えてよさそうです。
・Cambridge English Dictionary: to go away, usually because you do not want to do something or meet someone: Tina always does a vanishing act when my mother comes to stay.
日本語の失踪、夜逃げに近いですね。