To bury your head in the sand is to refuse to face a problem you know is there. Do not bury your head in the sand.
It is always a criticism, and the refusal is deliberate rather than ignorant. Ostriches do not actually do it, which everybody says and nobody minds.
1phrasebury your head in the sandTo refuse to face a problem you know is there.
“You cannot bury your head in the sand about a bill that size.”
bury your head in the sand is a phrase.
Practised in Idioms