“Seeing my favorite singer in concert was the best day of my life, and getting his autograph was the icing on the cake!” 「ライブで大好きな歌手に会えたのは人生で最高の経験だったけど、さらにサインももらえるなんて！」
「Icing on the Cake（ケーキの上のアイシング）」はいいもの（ケーキ）をさらに良くするもの（クリーム）のメタファーです。皮肉な使い方で悪いことにも使えます：彼はお金を盗んだだけではなく、スタッフに失礼な態度をとった！
“The icing on the cake” is something good (icing) that makes a good thing (cake) even better. We can also use it sarcastically to talk about bad things: “Not only did he steal money, but he was rude to the staff. Just the icing on the cake.”
