What’s Up By EvilJuly 12, 2013January 13, 2022Slang What’s Up = hello, how’s it going (informal) *Sometimes “what’s up” is shortened to just “sup.”Who says it?: Mostly young people It sounds like a question, but really it is the same meaning as “hello” or “how’s it going.” You don’t have to answer with anything specific. A simple “hi”, “hey”, or your own “what’s up” is fine to say back. * You may see it spelled or pronounced in different ways like:“waasssup,” “wazzzaap,” “what up,” or “sup” Ex: Person #1 = “What’s up, man?”Person #2 = “Not much, what’s up with you” Ex: Person #1 = “What’s up? “Person #2= “What’s up!” *IMPORTANT NOTE: Remember this is informal, so we only say “what’s up” to our friends. BACK to Slang