His story is told in flashback, an anecdote shared amongst a group of comedians over lunch at New York's Carnegie Deli.
In 2013, Susman, along with the Old Jews Telling Jokes cast and The Chew personality Carla Hall appeared at Carnegie Deli to unveil the "OJTJ sandwich", named for the comedy group.
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He was the second person in history to complete successfully the Carnegie Deli Challenge (two 3½ pound sandwiches of turkey, corned beef, Swiss cheese, and toppings in one sitting), doing it in just under two hours (Ed "Cookie" Jarvis completed the challenge the same day an hour later, after three hours of eating).
He also was a regular guest host of The Tonight Show with Johnny Carson, and was one of 'The Comics' in the Carnegie Deli of Woody Allen's 1984 movie, Broadway Danny Rose.