The author used verbal irony as a literary device.
Its called a double replacement/displacement reaction.
It has been said that "one's rights ends where another person's rights begins." In other words, there is a proper place and time for each person's expression of his freedom and it should be maintained under certain limits and conditions. For instance, an individual has the freedom to choose his own clothes; thus, he can wear his style for as long as he does not distract or offend others by his clothes. This is also true with drinking alcohol. Nobody's stopping anybody from drinking but they are expected to behave properly so as not to cause public disturbance. The worst scenario is driving under the influence of alcohol where many lives are cut short because of car and road accidents. Peace and order is maintained when personal freedom and responsible social behavior are put in place. Going beyond the limits will only deprive the society of harmony and hinder others from enjoying their own personal freedom.
