"Darling: the popular form of address used in speaking to a member of the opposite sex whose name you cannot at the moment remember"

This quote by Oliver Herford is an amusing method of mentioning the awkwardness of forgetting somebody's name. It recommends that when we are in a scenario where we can not keep in mind the name of an individual of the opposite sex, we can utilize the term "Darling" as a method of resolving them. This term is a method of showing respect and politeness, while also avoiding the humiliation of not knowing the individual's name. It is an amusing method of explaining the awkwardness of forgetting someone's name, while also suggesting a courteous way of resolving someone in such a circumstance. The quote also suggests that the term "Darling" is a popular type of address used in such circumstances, suggesting that it is a typical occurrence.