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
Daughter: So I really want all my friends to have a great time. I was thinking it would be a good idea to have some candy out on the tables for people to snack on.
Mother: Well, if you want them to really enjoy themselves, candy is dandy but liquor is quicker.