The phrase "birds and the bees" is a euphemism for discussing sex education with children. However, there are many other phrases and synonyms that can be used to approach the topic. For example, "the facts of life" is a classic phrase used to discuss reproduction. "The reproductive system" is a more scientific approach that can break down the different components. "Sexual health" is a broader term that can encompass all aspects of sexual education, including contraception and STDs. "Growing up" is a more general term that can be used to discuss the physical and emotional changes that happen during puberty. No matter the phrase used, discussing sex education with children is crucial for their long-term development and well-being.