He is acting in a way that is like 'hide the head but forget the tail'.

He installed a hidden camera in the room.

It was revealed that he had a hidden weapon.

He lied to conceal the truth.

She is planning a date with her current boyfriend.

He lost everything.

My boyfriend gave me a gift.

Everyone was surprised by the news.

He likes to take a walk in the park at dusk.

He remembered the proverb 'A capable hawk hides its talons' and modestly showed his talent.