see also: whazzup, whassup, whasabi!!, etc.
1.
Hi
2. Wtf is
wrong with you??
It's probably originated from the late 20th century, when
people were astounded with the sky. The only thing that they would reply was "nothing"
Probably the first term to the decline of western civilization
1. Person 1: What's up?
Person 2: "Nothing" (most common response, maybe 99% of
people say that)
2. Person 1: What's up?
Person: "The
sky" (smart alleck answer: also: "the ceiling" or, "
da roof")