The word "煲电话粥" is formed by directly combining the verb "煲" (meaning to simmer or stew), which here denotes engaging in an activity for a prolonged period, with the object "电话" (telephone), and the noun "粥" (porridge), which serves as a metaphorical object representing something that requires lengthy simmering; thus, the phrase literally means "to simmer telephone porridge" and idiomatically describes the act of having a long telephone conversation.