“最傷感的并不是當你長發及腰那人卻已婚，而是當你正留著頭發，卻發現腰沒了。”春節期間大吃大喝的時候，千萬別忘記掛念著自己的體重，不然你可不只是要往外掏紅包，還要破費重新買衣服了。

Christmas tight refers to the period of time after Christmas and New Years where the clothes you wore prior to the holidays that fit well, all of a sudden are a little tighter than they should be.
圣誕節和新年之后，你發現你節前穿正好的衣服，居然有些緊了。這就是“節后縮水”。

Christmas tight happens because there is so much delicious food during the big holidays, and you just cannot help yourselves.
發生節后縮水是因為在這種盛大的節日里美味的食物太多了，你忍不住狂吃。

例句： I got this new dress shirt for Christmas. I went to wear it with my favorite work pants, but they are a little Christmas tight now.
我為圣誕節新買了這件襯衫。之前我一直拿它和我最愛的工裝褲搭配，但現在有點兒節后縮水了。

（中國日報網英語點津 yaning）