When you're too much of a fiend; when you're such a fiend that you can only be defined as a fiendhead.
Ex. Byron's smokes so much that he became a fiendhead.
I thinkthe biggest fiendhead that I know is Tommy.
JUULs aren't CUUL, they only produce fiendheads!
Guy 1: I just got this message on my screen when typing qeqtyhreuyvyasujicdfvdsucaijxoscndbvhsnciamxc smcdkmvemkv cmsdfk vfb vbndfdnfbndfkmbkdmkdfgkmbgkdmfgkdmgkdmkgmfa,sfsf,sofodg,sof,sfoofofofd *whatever.* it says: Bad Message 431 reason: Request Header Fields Too Large
Guy 2: oh... you're so bored you broke it!