Where does “WTFDYM” come from?

WTFDYM (English) comes from English WTF, from Egyptian wft.

Ancestry of “WTFDYM”, step by step

WTFDYM traces back through two separate lines of ancestry.

via English WTF

StepLanguageWordMeaning
1EnglishWTFwhat the fuck
2Egyptianwft—

via English WDYM

StepLanguageWordMeaning
1EnglishWDYM—
Every word from Egyptian wft →Every word from English WTF →