Like stink (on a monkey/skunk/pig/etc.) informal simile
Being very strongly
When the mass shooting occurred in school, every news outlet in the nation was on it like stink on a monkey.
The fans chased the car carrying the Portugal football star, Ronaldo, like stink on a pig.
To happen strongly or successfully.
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.