校长快说昨天晚上去哪了
[xiào zhăng kuài shuō zuó tiān wăn shàng qù nă le]
Translated into 'Principal, hurry up and say where you were last night', it may suggest playful curiosity about the principal's late-night whereabouts. Or metaphorically, this nickname can be seen as expressing concern over someone who has some responsibilities (represented by 'principal') not living up to expectations, possibly engaging in misconduct outside of view. The tone carries an urgency as if addressing someone important about matters out of the norm.