W.K.I.A.A. is an abbreviation for We Knew It All Along. It is used when friends warn/express to other friends what they think is going to happen to their friend and later it does happen to them.
Does he take you out to dinner, the movies, bowling or attempt to do anything that interest you in public? If not then drop him immediatelyno matter what his excuses are. Don't be a w.k.s. or wks (well kept secret).
W K Y stands for Would Know Ya.
This evolved as an offshoot of the reply D K Y . It began sometime in the 1970's by local teenagers. Basically it was just a fast mouth reply to another insult.