Cognitive Decline Jokes

Donald Trump

How can you tell Donald Trump is old and demented?

He can't distinguish between tanned people and cockroaches!

Health

I would've made a joke about Alzheimer's, too bad I forgot about it...

Alzheimer's

Q. What do a one-story house and an Alzheimer's victim have in common? A. Nothing going on upstairs.

Age

I want to make a joke about old age, but I'm too senile to finish it.