High days and holidays British noun phrase
Days when festivities, or holidays happen
My wife and I usually travel abroad on high days and holidays.
There are several festivals held by the village council on high days and holidays.
A high day was the day of an important festival according to the Church's calendar. A holiday (originally holy day ) was similar but less specific. Holiday now refers to any day off, without any sacred significance, and so holy day is used if a specifically religious occasion is intended.
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.