This reminds me of a Chuck Norris fact:
"Chuck Norris is 1/8th Cherokee. This has nothing to do with his ancestry, the man just ate a fucking Indian."
BTW, it's kind of interesting to note that Jews are the only religious group in the world that are inseparably tied to their ethnic group. Christians, Muslims, and virtually all other religions encompass many ethnicities and people, but not Judaism. You can practice Judaism, but you'll never be a Jew unless you're of that bloodline.