a mug's game
US /ə mʌɡz ɡeɪm/
UK /ə mʌɡz ɡeɪm/

1.
aptal işi, boşuna çaba
an activity or situation that is likely to be unsuccessful or to cause problems for the person involved
:
•
Trying to get rich quick is often a mug's game.
Hızlı zengin olmaya çalışmak genellikle aptal işidir.
•
He realized that betting on horse races was a mug's game.
At yarışlarına bahis oynamanın aptal işi olduğunu fark etti.