@@annegirlinger Kevin said "うなずち"(unazuchi) by mistake, which is not a correct Japanese word His friends assumed in the video that he mixed "うなづき"(unazuki: nodding) with "相槌"(aizuchi: saying something to show that you are catching what the speaker is saying, and this is the very thing Japanese people often do in a conversation, just like English speakers say "uh-huh") while recognizing that Kevin wanted to say "うなづき"(unazuki) As some people commented here, this is a subtle mistake and also sounds cute Hope my comment makes sense to you!
@@TaS-x8b Thank you for taking your time to explain the word. I think we might do something similar here (the US) too although I can't think of any off the top of my head right now. When you come up with any, let me know. Cheers!🥂