To cause such intense secondhand embarrassment that you want to disappear from the face of the earth. When something gives you cringe, it's so awkward, so painful, or so out of place that it physically hurts to witness.

To act like you're the protagonist of a movie and the whole world revolves around you. When someone's being the main character, they live every moment as if cameras are following them with a soundtrack playing.

To laugh so hard you almost pee yourself — a vivid expression for when something is so ridiculously funny you completely lose control. It's the gold standard for describing gut-busting, tears-streaming, can't-breathe laughter.

A self-centered person who thinks the world revolves around them — a total narcissist. The expression 'thinking you're the belly button of the world' perfectly captures that insufferable attitude of someone who can't see beyond themselves.