Hide (one's) head in the sand informal verb phrase
To avoid, or attempt to avoid, a specific problem by pretending not to see it.
Hide your head in the sand if you want to. Anyway, you must be responsible for the accident.
Don't hide your head in the sand. You need quick treatment to stop the rapid growth of leukemia cells.
To hold tightly to something with one's fingernails to avoid falling
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.