Where does “Liverpool kiss” come from?

Liverpool kiss (English) comes from English kiss, from Middle English kissen, from Old English cyssan, from Proto-West Germanic *kussijan, from Proto-Germanic kussijaną, from Proto-Germanic -janą, from Proto-Indo-European -yéti, from Proto-Indo-European yé- — he, she.

Liverpool kiss (English): A headbutt

Definitions

  1. A headbutt

Ancestry of “Liverpool kiss”, step by step

Liverpool kiss traces back through two separate lines of ancestry.

via English kiss

StepLanguageWordMeaning
1EnglishkissTo touch with the lips or press the lips against,...
2Middle Englishkissento kiss
3Old Englishcyssanto kiss
4Proto-West Germanic*kussijanto kiss
5Proto-Germanickussijanąto kiss
6Proto-Germanic-janąDerives denominatives from nouns and factitives...
7Proto-Indo-European-yétiCreates intransitive, often deponent,...
8Proto-Indo-Europeanyé-
9Chichewaiyehe, she

via English Liverpool

StepLanguageWordMeaning
1EnglishLiverpoolcity in England
2Middle EnglishLiverpul
3Old Englishlæferreed, rush
4Latinlavera water-plant, possibly water parsnip;...
5LatinlavoI wash, bathe; I wet, moisten
6Proto-Italiclawaō
7Proto-Indo-Europeanléwh₃eti
8Proto-Indo-Europeanlewh₃-to wash
Every word from Chichewa iyeEvery word from Proto-Germanic -janąEvery word from Proto-Indo-European -yéti