Where does “fuck-a-doodle-doo” come from?

fuck-a-doodle-doo (English) comes from English fuck, from Middle English fukken, from Old Norse fukka, from Proto-Germanic fukkōną, from Proto-Indo-European pewǵ- — to punch, fist-fight; to prick, poke, stab.

Ancestry of “fuck-a-doodle-doo”, step by step

fuck-a-doodle-doo traces back through two separate lines of ancestry.

via English fuck

StepLanguageWordMeaning
1EnglishfuckTo have sexual intercourse, to copulate; To have...
2Middle Englishfukkento fuck; to beat, strike
3Old Norsefukka
4Proto-Germanicfukkōnąto blow, gust; to strike, assail; to copulate
5Proto-Indo-Europeanpewǵ-to punch, fist-fight; to prick, poke, stab

via English cock-a-doodle-doo

StepLanguageWordMeaning
1Englishcock-a-doodle-dooImitative of the cry of the rooster; The cry of...
Every word from Proto-Indo-European pewǵ-Every word from Proto-Germanic fukkōnąEvery word from Old Norse fukka