The squished together slang word "wassup," also known as (wussup, wassssssssssssssup, wosssssssssssssup) and others originally stemming from the words " what is up " either meaning (how are you), (what are you doing) or even both at the same time.
Time went by, and the expression "what is up" became too long to say, type and text for the average lazy person. Therefore
wassssssssup was invented.
Following this point, budweiser took this idea and made it their international slogan used on adverts, said by various strange frog people.
WASSSSSSSSSUP was then the word of the world and everyone, wherever they were, whether in an
igloo in iceland, or in a whole in tikrit, (iraq), or
in a cave in afghanistan, or even in some shitty trailer park in America, or
Buckingham palace everyone could say "wassssssssup" without necesarilly understanding it.