senior moment

美 
英 
  • n.〈非正式〉老年失忆症
  • 网络老年人的瞬间记忆丧失;老痴瞬间;高龄的一刻
复数:senior moments  
senior moment
n.
1.
尊长表现(老年人失忆、忘事、糊涂的典型状况)an occasion when sb forgets sth, or does not think clearly (thought to be typical of what happens when people get older)
It was an important meeting and a bad time to have a senior moment .
那是个重要会议,可不能犯糊涂。