"...[T]he beautifully named 'Dunhuang Bureau of Etiquette' insisted that local officials use the following letter template (dated 856) when sending apologies to offended dinner hosts. The guilty party would copy the template text, enter the dinner host's name, sign the letter and then deliver with head bowed..."
Yesterday, having drunk too much, I was intoxicated as to pass all bounds; but none of the rude and coarse language I used was uttered in a conscious state. The next morning, after hearing others speak on the subject, I realised what had happened, whereupon I was overwhelmed with confusion and ready to sink into the earth with shame.(Via GMSV.)
