Welcome to your 50s, your knees will now decide when you will sit down.

Commentary:
Ah, the joys of reaching your 50s! Welcome to the era where your knees hold the power and dictate your sitting schedule. It's like having your own personal knee bosses running the show! Remember to treat them well, or else they might just send you crashing down when you least expect it! Enjoy the sit-down dance of your 50s!