Have (grown) whiskers informal verb phrase
Used to describe something that is extremely old to talk about or to do, especially a joke or a story.
The writer constructed a complicated plot based on fairy tales which have grown whiskers.
It is not funny at all. Your joke has grown whiskers. I've heard it so many times.
To be in a poor condition.
Another individual is far older than the individual in question
Said when a person is in a romantic or sexual relationship with another younger person
Look older than a certain age
The verb “have" should be conjugated according to its tense.
Said when one is looking back on something enjoyable or worthwhile in the moment that it was happening even though it was impermanent
The party came to an end, but it was fun while it lasted.