(as) red as a cherry informal simile
Used when someone's face becomes extremely red or flushed because of embarrassment, anger, or strain
Jenny was as red as a cherry because she realized that everybody had been listening to her singing.
My heart rate goes up and my face turns red as a cherry when I'm angry.
She turns red as a cherry every time he looks at her.
If someone wants to curl up and die, they feel very sorry, ashamed or embarrassed about what happened and wish they could hide it or escape from it.
1. If a person sinks through the floor, it means that he/she has a strong feeling of embarrassment.
2. If one's heart sinks through the floor, it means that he/she feels extemely sad or disappointed.