Effective phrases for responding to " What's up ?" along with examples and tips to choose the right response based on relationship and situation. What’s up or how are you are very serious questions on Nordic cultures and are meant to be a spark for a conversation. Usually history is shared between the people who ask this question and it is further a way to connect with each other. Flirty and fun ways to respond to ' What 's up ?' From clever comebacks to charming replies, keep the conversation exciting and engaging!