An elderly man went to his doctor and said, 'Doc, I think I'm getting senile.. Several times lately, I have forgotten to zip up.'

'That's not senility,' replied the doctor. 'Senility is when you forget to zip down.'
A man who plays golf to forget about work will soon go to work to forget about golf.
Forget about the past, you can’t change it. Forget about the future, you can’t predict it. Forget about
the present, I didn’t get you one.
Yo Mama's so ugly her memory foam mattress wishes it could forget.
My wife will never forget falling asleep in the sun with her breast exposed.
It’s forever burned in her mammary.
You can forget about winning, princess. Because even Cinderella can’t get to this ball.
Forget hydrogen, you're my number one element.
I changed my password to "incorrect."
So whenever I forget what it is the computer will say "Your password is incorrect."
What do runners do when they forget something?
They jog their memory!
Why do turtles never forget?
Because they have turtle recall.
Because they got turtle recall, turtles never forget.
Why don't dinosaurs ever forget? Because no one ever tells them anything!
I never forget a face, but in your case I'll make an exception.
“I never forget a face—but in your case, I’ll be glad to make an exception.”
Groucho Marx
How is it that elephants are always ready for a swim?
They never forget their trunks!