The man in the picture above is Irwin Corey, a Jewish-American comedian. No matter the age, he was always someone who likes to tell jokes. One of his most famous gimmicks is him as "Professor Irwin Corey."

On July 29, The World's Foremost Authority turned 101 years old.

Here's an NY Daily News article about him just before he turned 100. He also cracks a good joke.

Happy birthday, Professor!