Sorry, everyone. I need a Friday.
TGIF doesn’t really exist in Japan, but I think the closest phrase is 「やっと金曜日なんだ!」 with the appropriate emphasis applied. I tried to teach TGIF to JHS kids for years but never got them to memorize it until I said that phrase somewhat dramatically…to the dismay of the Japanese teacher I was working with.
There’s 花金、which I understand to be fairly cheesey.