Shoe annoyance is a term used to describe the discomfort caused by small objects such as pebbles or pins that get stuck in shoes. The two most common forms of shoe annoyance are PINCH and PEBBLE, which can both be solved with five and six letter words respectively. PINCH refers to the feeling of tightness or pressure caused by something pressing against the foot, while PEBBLE is the name given to small stones or rocks that can become lodged in the sole of a shoe.