Awkward greetings and crushes at a party

What does “hang out” mean in American English?

Hang out is one of the most common American English phrasal verbs. It means “to spend casual, unstructured time with friends”: no plan, no agenda, just being together. Americans say let’s hang out, we hung out yesterday, you never hang out anymore. The phrase is different from go out (which suggests a planned activity) and meet up (which suggests a specific place). It’s also different from British English, where hang out exists but is less common; Britons might say meet up or spend time together.

In this clip, a teen at a party greets another with the slightly accusing line: “I’m surprised you’re here. You never hang out.”