This is a question I have heard frequently asked. What's up? Or the ever popular Wassup?
What does this mean? Surely it is slang since all the information available to answer the question of What's up? may be easily obtained by simply looking up. Unless Spiderman lives in your neighborhood, I very much doubt you would find much interest in "What's up".
In this video it seems to be some kind of male beer bonding ritual.
Any ideas?