[Walking down the street]
*step*
*step*
*step*
*step*
*encounters gravel*
*step*
*click*
*step*
*click*
*step*
*click*
*sigh*
*digs pebble out of groove in shoe*
*step*
*step*
*step*
*step*
*step*
*step*
*encounters gravel*
*step*
*click*
*step*
*click*
[repeat]