The idiom "spine-tingling" is used to describe a feeling of excitement, nervousness, or fear that makes one's spine tingle. It can also refer to a sudden chill or goosebumps.

The idiom "put your foot in it" means to make a mistake, or do something that is considered a blunder or error. It can also mean accidentally doing something wrong, or making a misstep.

The idiom "head-on" refers to facing a situation directly and without hesitation. It means approaching an issue or problem with a clear and determined attitude.

"Over and above" is an idiomatic expression that means "in addition to" or "more than". It can be used to describe actions or qualities that go beyond what is expected or necessary.

"Heavy heart" is an idiom that means feeling sad or disappointed about something. It can also mean carrying a heavy burden or responsibility. The phrase can be used to describe a sense of weight and emotional heaviness.