《笑林广记·贪吝部》
友人突然醒悟，说： 对了，见面确实见过一次，因你只顾吃菜，整个宴席间不曾抬头，所以不认识您的尊容，莫怪莫怪。 
彼人大悟。曰： 是了，会便会过一次，因兄只顾吃菜，终席不曾抬头，所以认不得尊容，莫怪莫怪。 
The friend suddently realized and said: Yes, we have met before. But you were paying too much attention to the dishes. You didn't look up during the whole dinner, so I didn't see your face. I apologize.