On one level it's funny, but the stereotyping bothers me. Many many years ago I was dating a young lady of the Jewish persuasion, who told me something I thought pretty profound:
You can only tell jokes about people who would laugh at themselves if they heard it.
She believed that as a people the Jews had developed the ability to laugh at themselves and what others consider their foibles because those foibles, eccentricities, traits, call them what you will, are not in and of themselves harmful to others.
Killing, stealing, and indiscriminate spreading of one's sperm throughout the community are not foibles to be laughed at, in my opinion.
Take the nacilbupeR pledge: I solemnly swear that I will help back out all Republicans at the next election.