Another for not much. It’s become a reflex.
Lately, I’ve been saying, “gas prices, again” (sigh).
Most of the time I’ll say “the ceiling, last I checked” (or sky if we’re outside). If I’m in a rotten mood I’ll say “my blood pressure, don’t you make it any worse.”
I’m another “not much”-er, in the same way that I tell people I’m fine. The EMTs could come to scrape me off the sidewalk after I jump off a building, and they’d be like “How are you feeling?” and I’d be “Fine, thanks, how about yourself?”
I opt for the rhyming “Not a lot!” Seems to get me by most of the time.
“Not too much. Why?” or “I’m sorry. What?” depending on how attentive I’m being at the time.
As I hate stilted, clichéd conversations, so if someone asks me “What’s up?” I pause a moment and think, and then tell the person about something new that’s happening in my life. Sure is more interesting than “Not much.”
“Eh, a little of this and a little of that*” is my stock response for either “What’s up?” “How’s it going?” or “What-cha up to?” Doesn’t really make sense all the time, but it works.
*Actually sounds more like, “Eh, littleathis, littleathat.”
Am I the only one who thinks the proper response to “What’s up” is “What’s up”?
No it doesn’t make sense logically. Lets just say that nobody’s ever looked at me funny for answering the greeting this way, which is more than I can say for “not much” or "nuthin’ ".
I do the same for “how you doin’?” or “howareya?”.
They’re questions everyone asks, but nobody wants to know the answer to… 
I respond by glowering and muttering under my breath, then turning away and forevermore pretending the person doesn’t exist.
But that’s pretty much my standard response to any greeting.
“Hey, dude!”
I say “Howzzit!” and blow on past them with a spring in my step.
I-i-i-i-i-i’m hunting a wabbit.
What’s up?
It’s a preposition.
“The sky, but it’s falling.”
“The usual”, or “same old”
“A type of quark with a positive charge of plus two-thirds and marginally less than one-third the mass of a proton.”
You stole mine. :mad:
“whattupwichu?”
“nothin’”
Still, I have a slightly more interesting response to “How’s it hanging?”
Ceiling.