Talk:Blood Feud/References

I know they say in the episode that Blood Type Double O Negative is very rare, but is this a joke? What I mean is, i'm not even sure it exists! Wikipedia link: Human Blood Groups JaffaCakeLover 12:23, 1 September 2009 (UTC)
 * Good question. I didn't even know there were 30 blood types. According to SNPP it is nonexistent. --Sgtcook 12:48, 1 September 2009 (UTC)