How to tell humorous jokes when people get old and grow beards easily?

People tend to grow beards when they are old. Tell humorous jokes as follows.

1. Older people's beards are getting longer and longer because the older they get, the more interesting they are. Beards are a symbol of their humor.

Old people's beards grow quickly because they have a lot of things to do. Beards are like an automated tool, which can help them save time.