a focused student tries to concentrate on reading an important book at a library table. Behind him, another person loudly cracks their knuckles, taps their pen repeatedly, and rustles through papers. The reader's face shows clear signs of growing irritation with furrowed brows and clenched jaw. His shoulders tense up as the distracting sounds continue without stopping. Other library visitors nearby also show annoyed expressions and glance toward the noisy person. someone being irritated and annoyed by persistent bothersome behavior