Here are some randomly selected joke topics beginning with the letter 'N'
Numbered
Why was the calendar sad?
Because its days were numbered.
Nurse
Doctor: Nurse, I'm ready to see the next patient now, can you send her in?
Nurse: Sorry, she didn't look very well, so I sent her home.
Nothing
I started out with nothing...and I still have most of it left.
Nothing
If you have nothing to do, please don't do it here.
Nothing
Knock knock
Who's there?
Scott
Scott who?
Scott nothing to do with you.
Nuisance
My dog is a nuisance. He chases everyone on a bicycle. What can I do?
Take his bike away.
Notice
Notice - If you notice this notice you will notice its not worth noticing
Notice
I've got a bad stomach.
Well just keep your coat on and on one will notice.