The phrase "good old times" is a nostalgic expression that vividly refers to a pleasant period in the past. Synonyms for this expression include "golden age," "halcyon days," and "the good old days." Another alternative for this phrase is "yesteryear," which is used to describe old-time memories or events that occurred in the past. The word "nostalgia" also relates with this phrase and refers to a sentimental desire to return to previous happy moments. While the exact time and place associated with this expression may vary depending on the speaker, it always denotes a time period where memories and experiences brought joy and satisfaction.