Fu<k Sake is used after you find out something you should have maybe known before or used when questioning the validity of something. Fu<k Sake can be used instead of saying, "Jesus Christ" , "that's rediculous" , "are you kidding me", "what?, no way", etc. Reference @whatnooowaaay
example: infomercials-when you see that amazing product on tv for the first time and its so amazing you say, "What? Nooo Waaay, for Fu<k Sake, why didn't I think of that."
by @bigtruk August 2, 2023