I practice age discrimination at least once a week.
When I go to the grocery store, I look for the youngest cashier in the checkout lines on the principle that he or she will make less small talk and ring me up faster. This practice is validated more often than not, and considering Portland checkers seem a lot slower than California ones, it seems entirely justifiable.
I really don’t want to chat. I want my groceries checked so I can get out of the store.