what do most people respond when asked what's up?
370455
I usually respond with "Hi."  Most people don't really care.  It's just a greeting that's similar to "Hello."  You could probably respond back with "What's up" also.
1072696
Okay, I'm from Australia and I lived in the USA for a while in 2003. I had to ask an American friend how the heck to respond correctly to this question too! My friend's advice was to say "Aww, not much, just ________" if you had something to say, or to reply with "Nuttin', sup wit'choo?" (meaning "Nothing, what's up with you?") if there was nothing going on... I hope that helps you!
712847
'many up'.  That's great.\n\nThank you!
1090350
So what's the question?
706404
Please be good  and ask what is on your mind, re-phrase.
191949
When someone ask how are you doing you automactailly respond "ok, fine, good, or great."  Small communications that occur for only social reasons.  No one really want a 30 min conversation when you ask how are you
403749
Make a comment about the weather or the traffic...\n"boy, was it cold this morning, did not feel like going to work..gee ! so many cars..How do you come here ?..\n\nSmall things and ask for their opinions so they answer you..\n\nAnd how are you this morning ??:-)
290878
it means whats up? or really?
697788
pretty much::: a casual hey whats up
389186
Start sayin stuff like, "Whats up?" or "Hi".
1089944
Ok. Sorry, what is the question?
634515
What are you trying to ask?
1037635
Walk up to someone, say "hey".  They say "hey" back.  You ask "what's up?" they reply "not much" and it goes from there.  been done for years like that
1159549
I'd say:\n1. What do you want?\n2. Good riddance.\n3. It's all true.\n4. What's up.
262494
What exactly are you asking?
359154
I'm good thanks for asking. How are you?
829507
OK What is your Question?