手機帶給人們最大的便利就是可以隨時隨地保持通話，而這樣的便利同時也早就了一批耳朵粘著手機不放的“手機通話狂”。到了智能手機時代，自然就發展成了無時無刻不在看手機的“低頭族”（phubber）了。

OCUD (Obsessive Cellphone Use Disorder) describes a person who continually talks on their cellphone or check updates on mobile apps in public, while driving, checking out, or eating in a restaurant.

OCUD（全稱Obsessive Cellphone Use Disorder，手機過度使用癥）指一個人無論開車、出門或是在餐館吃飯都一直在用手機打電話或者不停查看手機app上各種更新的狀態。

For example:

I wish that lady would get off her cellphone and watch the road. Gosh, she must have OCUD or something.

我真希望那位女士能放下手機看著點路。天啊，她一定得了手機過度使用癥啥的。