Submit your jokes to the sniff test
Just because people might laugh, doesn’t mean your satire, jokes or comments aren’t ageist. Does the humor come from reviling, infantalizing or marginalizing a whole category of people? If you’re not sure, mentally replace the reference to aging or old with the equivalent reference to another vulnerable population, such as a religious or ethnic group. Do you find it offensive? If it smells funny, flag it before you speak it out loud.