My old man is old fashioned.

The words ‘my old man’ are American slang sometimes used by a person to describe their father.  It might less often be used by a woman to refer to her husband or boyfriend.  ‘Old fashioned’ refers to dressing or doing things in a way that was popular a long time ago.

我老爹是個老骨董—很守舊呢！

在這句美式俚語中 my old man通常指「老爸」而言；較少拿來指「丈夫」或「男朋友」。Old fashioned 可用來形容衣服款式（或做事方式）老舊、不合時宜。