Where does “poopooface” come from?

poopooface (English) comes from English face, from Middle English face, from Old French face, from Late Latin facia.

Ancestry of “poopooface”, step by step

poopooface traces back through two separate lines of ancestry.

via English face

StepLanguageWordMeaning
1EnglishfaceThe front part of the head of a human or other...
2Middle Englishfaceface; Alternative form of fass
3Old Frenchfaceface
4Late Latinfacia

via English poopoo

StepLanguageWordMeaning
1EnglishpoopooTo defecate
Every word from Late Latin faciaEvery word from Old French faceEvery word from Middle English face