For a while Twitter had a hash tag, #elderlybooks. The purpose apparently was to reinforce stereotypes of aging.
Fortunately, it seemed to disappear on its own. Some examples:

50 Shades of Gray Hair.
Cartoon of an older lady: “Tracking my cookies? They will never get my recipe!”

Charlotte’s Lack Of Understanding Of The Web

The Five People You Are Going To Meet In Heaven Very Soon

What to Expect When You’re Expiring

Tuesdays With Who?