champ at the bit and chomp at the bit

champ at the bit and chomp at the bit
1. Lit. [for a horse] to bite at its bit, eager to move along. Dobbin was champing at the bit, eager to go.
2. Fig. to be ready and anxious to do something. The kids were champing at the bit to get into the swimming pool. The dogs were champing at the bit to begin the hunt