What is we should hang out sometime meaning?

When someone says "we should hang out sometime," it generally means they would like to spend more time with you in a casual setting. The phrase is often used as a way to express interest in getting to know someone better or to catch up with an old friend. However, it is important to note that this type of invitation does not always lead to concrete plans and it is up to both parties to follow up and make arrangements for a specific time and place to hang out.