ぜんぜん知らない人のPostで学んだ言い方
faff about, faff around:
to waste time doing unimportant, unnecessary, or disorganized things.
I have to leave my friend's place now to catch my flight. But he is still faffing around in his room. I'm so upset.
イギリス英語だそうです。
#HonkieEnglish