"Way back whens" is a colloquial phrase used to refer to a distant time in the past. There are several synonyms that can be used in place of this expression, including "antiquity," "yesteryear," "olden days," "bygone era," "ancient times," and "long ago." Each of these phrases conveys a sense of nostalgia and longing for a time that has passed beyond our reach. They can be used in a variety of contexts, from discussing historical events to reminiscing about personal memories. No matter which synonym you choose, each one captures the essence of a time long gone by and brings to mind a vivid image of the past.