鼬ごっこ

いたちごっこ, イタチごっこ, イタチゴッコitachigokko

noun

1. going round in circles
2. game of cat and mouse
3. pointless and repetitive back-and-forth
4. itachi-gokko
5. Edo-period children's game in which two players alternately pinch the back of the other's hands and stack them on top of each other while saying "itachi-gokko, nezumi-gokko"

Study it in Yanamino