Please see the link, Jeff Uren was a racing driver and car modifier............... Famous for the Savage Cortina. http://en.wikipedia.org/wiki/Jeff_Uren
It is just a run of the mill anti-semitic joke. Jews don't like pigs, so the pig is insulted in Yiddish. It is racist humor typical of the Virginia trailer park crowd.
Speaking of racist humour, Although I may regret this, why do you have a swastika as your avatar ? That is one of the most offensive symbols to older people in the UK and certain parts of Europe. I know all about it's ancient religous significance but the nazis hijacked it.
He's under the impression that Obama is a Nazi. You know, frightened,...delusional, dare I say, racist.