👉 A facial expression comprised by flexing the muscles of both ends of one's mouth, often showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement or anxiety.
Alright class, settle down now, let’s take a look, At this word “smile,” a curious book! The dictionary's given us quite the plea, A detailed description for you and me. Let’s break it down, nice and slow, So we really understand just how it goes. “Flexing muscles” – think of your face, you see, Your lips are moving, happy and free! The “ends of your mouth,” a simple guide, Showing those teeth, with joyful pride! No voice involved, no sound to make, Just a silent feeling, for goodness sake! And in humans, it’s quite a treat, A way to show happiness, bittersweet. It can be voluntary, you choose to beam, Or involuntary, like a happy dream! Pleasure, amusement, maybe even a bit of fear, “Smile” expresses feelings, loud and clear! So, what does "smile" truly mean, my dears? It’s a way to show joy, banishing all fears! Now, who can tell me in their own words bright, What a smile can do with all its light?