Do you know what is the meaning of that expression? It is an informal conversational question which means "tell me what you are doing at the moment". And a very casual way of saying this expression would be "What's up?". Does it sound familiar to you??? EXACTLY! It recalls the renowned app called WHATSAPP. "What's up" is very common in English language; So Whatsapp is very similar like "what's going on", though what's up is a little different in spelling.
What are you up to? What are you doing? What's going on? What's up?... It sounds like a tongue-twister! Doesn't it? 😆
And remember, today is FRIDAY!!! And, we love Fridays!!! Have a wonderful weekend!! 😍