Paw,
I had the good fortune to grow up in a neighborhood adjacent to a mostly Jewish neighborhood. Had you the experience, i think you would have felt the vibe of A Jewish appreciation of "funny" from the characters, their interactions, and the way the jokes and situations were delivered. It's sort of like visiting Milwaukee, Wisconsin; you immediately pick up the underlying Eastern European cultural vibe from the people.
It would take a bit of thought to quantify the Jewish vibe. That's why i ordered up that book on Funnyman from Amazon. It attempts to explain ( according to reviews) that feeling relative to Funnyman, and also looks at Jewish humor in general.
Funnyman as a character approaches his situations with a mixture of sincerity and goofiness. For example, in the last panel of the first story in issue 3, Funnyman is hugging June, giving her some explanation as to how he solved his alien invasion problem, he issues a totally understated reason to the reader via an aside, and gives the reader a knowing wink as he embraces the luscious June. Amazing writer to reader communication.
I must confess a loss for words to be able to describe clearly what I'm babbling on about. perhaps after I receive and digest the book on Funnyman, i can revisit this with a bit more eloquence?
--Dave