Baby lag refers to extreme fatigue and disorientation due to the sleep deprivation associated with parenting a baby.

Baby lag（宝贝时差）指因照顾小孩导致的睡眠不足引发的极度疲惫和精神不集中。

This phrase is a play on jet lag, the fatigue and disorientation that results from a long flight across multiple time zones, which dates to 1965.

Baby lag这个说法是对jet lag（飞机时差）表达的演绎。Jet lag一次最早出现在1965年，指搭飞机长途出行，飞过多个时区导致的疲惫的精神不集中。

New parents who mistakenly put milk in a washing machine and socks in a fridge are suffering from 'baby lag'.

新生儿父母错把牛奶倒进洗衣机、把袜子放进冰箱等举动都是“宝贝时差”导致的。