I hate the phrase "What's up?" Every time this phrase is said in passing it's awkward. Let's just face it: Nothing is ever up. Ok? The only acceptable variation of "what's up?" is "WAZZUP!" from this video:
The topic of this post comes from an encounter I had today in which a guy from my biology class last semester passed me on campus and after he said "what's up?" I replied, cooly, "Mmmmmmnothing..." It was awkward.
The video comes from fond childhood memories of my friend Kristen and me saying, "WAZZUP?!" all the time after we saw it.