during a meal
食事中に彼が入ってきた。
He came in while we were eating.
彼は食事中に新聞を読む癖がある。
He has a habit of reading the newspaper while he eats.
食事中に携帯を見るのやめなさい。
Stop looking at your phone while you're eating.
…死に方がね食事中に悪いね
…Talking about how someone died during a meal is kind of inappropriate.
— サイコ (1960)