be champing at the bit

be champing/chomping at the bit

  also be chafing at the bit
to be very keen to start an activity or to go somewhere By the time he arrived to pick us up we were champing at the bit with impatience. I'm not sure if he's ready for extra responsibility yet, but he's chafing at the bit.
See also: bit, champ
References in periodicals archive ?
ow I am back with my first bit of football, so going forwards I am going to be champing at the bit.
I feel at the minute that I just need a little chance and I will be champing at the bit to make an impression," said the 23-year-old.
They lost 3-0 at home to Witton Albion so I would imagine they will be champing at the bit tomorrow night," said Dunn.