“How sharper than a serpent's tooth it is to have a thankless child”

Simplified Meaning:

It's really painful when someone you care for deeply, like your own child, doesn't show any gratitude or appreciation. Imagine you've worked hard your whole life to provide for them, giving them food, education, and love. Instead of saying thank you, they act like all the things you did for them don't matter at all. Consider a mother or father who worked two jobs just to give their kids a good life. They miss out on sleep, spend less on themselves, and do everything to make sure their children can go to college. Now, think about how hurtful it would be for those parents if their kids grow up to be rude, never show thanks, and disrespect them. That's a deep, sharp kind of pain, much like a snake's bite. You can apply this to your life by remembering to show gratitude to those who help you, especially your parents or anyone who supports you. A simple 'thank you' or a moment of appreciation can make a big difference and show that you recognize their efforts and sacrifices. By doing so, you prevent causing unnecessary emotional pain to the people who care about you the most.