a mischievous coworker repeatedly clicks his pen loudly while his colleague tries to concentrate on important work. The pen-clicker grins smugly as he taps the pen against his desk in an annoying rhythm. His frustrated colleague's face grows redder with each click, his jaw clenching tighter. The annoyed worker grips his pencil so hard it might snap, his eyebrows furrowed in mounting irritation. Other nearby coworkers glance over with concerned expressions, sensing the rising tension. someone being deliberately made annoyed and angry through persistent irritating behavior