You’re minding your own business when a “What’s up?” is thrown your way. You may hear this friendly phrase from a friend, crush, coworker, or stranger. They want to know what and how you’re doing, so what do you say? We’ve put together a list of the best responses to “What’s up?” so you’ll know exactly what to say in any situation. See More: https://www.wikihow.com/Respond-to-Whats-Up