I (do) declare! old-fashioned expression informal
Used to express surprise.
A: Congratulations! You have passed the exam. B: Well, I declare!
Peter: Did you know that she gained promotion? Linda: I declare!
To be surprised by some sudden occurrence
To greatly surprise, shock, or confuse someone
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.