Non-standard variant of champ at the bit, recasting it as chomp (“to chew noisily”) + bit (“part of a horse's harness held in its mouth”); horses tend to chew on their bits when impatient at waiting.
chomp at the bit (third-person singular simple present chomps at the bit, present participle chomping at the bit, simple past and past participle chomped at the bit)
- (intransitive) To show impatience or frustration when delayed.
- 2004, Lisa Wang, Taipei Times read at  on 14 May 2006
- Electronics makers chomping at the bit.
- 2005, Guy Hedderwick, speaking to Joel Zander of Australian Broadcasting Corporation, New Zealand Knights: Outsiders read at  on 14 May 2006
- But I wouldn't say [they're frustrated], I think our players are just chomping at the bit to go.
- 2005, David Borges, Journal Register News Service, Schilling ‘chomping at the bit’ read at  on 14 May 2006
- Curt Schilling was "chomping at the bit" following Monday’s three-inning stint in an intrasquad minor-league game.