1. All the runners were out of breath and were huffing and puffing by the end of the marathon.
2. Mrs. Rene returned to the shop to complain about the service she had gotten from a new sales clerk. After she left, the manager told the sales clerk not to be too concerned. “Mrs. Rene is always huffing and puffing about something or other. She doesn’t really mean anything by it,” said the manager.

A huff is a feeling of displeasure or resentment. A puff is a burst of breath.