Parental unit noun phrase
This phrase is often used in the plural to indicate both parents.
One's father or mother
I don't know which parental unit is driving me.
This form must be signed by the parent units.
Which parental unit will go to the parent meeting for you?
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.