78. It is a breach of etiquette to select the route when walking with a lady, unless she has requested you to do so.
79. It is ill-bred to refuse the last piece on the plate or dish, if it is offered to you, as it implies a fear that there is no more in the pantry.
80. It is a breach of etiquette to undertake any commission for a friend and neglect to perform it. Forgetfulness is no excuse.
81. It is a breach of etiquette to answer a serious remark by a flippant one.
82. Practical joking is a breach of etiquette that cannot be too severely censured.
83. It is a breach of etiquette to read when there is any other person present. In the family circle, a member who opens a book should apologize for and explain his apparent rudeness, if obliged to study or refer to the volume.
84. It is a breach of etiquette to yawn.
85. It is a breach of etiquette to blow the nose loudly.
86. It is a breach of etiquette to suck the teeth.
87. It is a breach of etiquette to pick the teeth or clean the nails in company.