Where does “頬っ辺が落ちる” come from?

頬っ辺が落ちる (Japanese) comes from Japanese が, from Finnish -nka — Forms nouns, mainly bird names (in dialects) and some toponyms.

頬っ辺が落ちる (Japanese): find something so tasty that one's cheeks fall

Definitions

  1. find something so tasty that one's cheeks fall

Ancestry of “頬っ辺が落ちる”, step by step

頬っ辺が落ちる traces back through 3 separate lines of ancestry.

via Japanese が

StepLanguageWordMeaning
1JapaneseがIndicates the subject of a sentence; conjunction;...
2Finnish-nkaForms nouns, mainly bird names (in dialects) and some toponyms

via Japanese 落ちる

StepLanguageWordMeaning
1Japanese落ちるto fall; to go down; to trip
2Old Japanese落つto fall

via Japanese 頬っ辺

StepLanguageWordMeaning
1Japanese頬っ辺cheek area, cheek
2Japanese頬辺cheek area
Every word from Finnish -nka →Every word from Japanese が →