chomp at the bit
The phrase "chomp at the bit" is an idiomatic expression that means to be very eager or impatient and unable to wait for something to happen. It comes from the literal image of a horse that is eager to begin a race and bites down on the bit in its mouth, indicating its impatience. The phrase is often used to describe a person's excitement or eagerness to start or do something.
English is confusing! Why do people say "Pardon my French" when they are speaking English? Because of idioms!
An idiom is a phrase or expression that usually presents a figurative, non-literal meaning attached to the phrase. Does that sound fun? It can be!
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