I need a few brief jokes to tell to a group of elderly people. The punchlines need to be easily understood, and they need to be clean and not making fun of anyone with any kind of disability. Have any brief and fairly original jokes?

This one is good, although I’ll probably have to emphasize the ‘mispronouncing words’ part, and instead of blonde, the dummy will be me:

A blonde is flying in a Boeing for the first time. She starts jumping on her seat shouting "Boeing Boeing Boeing". The pilot, clearly annoyed by this, walks up to her and says "Be silent". After a couple of seconds the blonde starts jumping again on her seat shouting "Oeing Oeing Oeing"

And this is okay but I’d like them slightly longer:

Aman called his twin brother from prison. “Hey remember when we were kids and use to finish each other’s sentences?”