What does sand in your craw mean?

The phrase "sand in your craw" is an idiomatic expression that means feeling irritated, frustrated, or upset about something. The term "craw" refers to the crop of a bird, where food is stored before digestion, so having "sand in your craw" implies feeling uncomfortable or agitated, similar to how a bird might feel if it had ingested sand. It is a figurative way of expressing emotional distress or annoyance.