Be a mug's game British disapproving phrase
To be an dangerous, foolish activity that will not benefit you or produce any positive result
In contrast to children from rural areas, those living in the city tend to consider playing under the rain as a mug's game.
Don't let your kids play in the street. It is such a mug's game.
You are drunk now! Let me drive you home. Driving when being drunk is a real mug's game.
Mug was slang for a fool in the mid-nineteenth century, especially someone who had been fooled by a card sharper or criminal. Mug's game first arose in the early twentieth century and has since been used to a broad range of activities, including horse racing and horse betting.
People tend to like forbidden or illegal things just because they are forbidden or illegal.
He must have believed that stolen fruit is the sweetest, and he, therefore, cheated on his partner.