Acronym for "What Would I Like to F*ck"? Existential query particular to internet pornography addicts, who have looked at so many lewd images that they no longer have any clue whatsoever about what constitutes an appropriate urge. (See punt-f*cker).
Derived by variation from MILF.
WWILF, Brad imagined IM'ing himsef, as he typed in the keywords for his favorite xxx sites.