expression
this and that; something or other
Used when complaining, protesting, or making excuses, often in the pattern 〜と言う or 〜で. Implies vague or trivial objections.
彼はなんのかんのと言って、結局手伝ってくれなかった。
He said this and that, but in the end he didn't help me.
なんのかんので、また遅刻してしまった。
For one reason or another, I ended up being late again.