Short Instagram Captions About Best Friends. Strong friendships sit at the top of that pyramid, often acting as a safe space where we can be who we truly are. They say actions speak louder than words. Share these best friend quotes with your bestie in an Instagram post or kind note. From funny to sentimental, these words capture the nature of true friendship. What’s the worth of your best friend? Few things impact life’s happiness, distance, and enjoyment as much as our friendships.