Does inbreeding make really stupid kids?

East Asians have the lowest genetic diversity/are the most inbred.

Does that answer your question?

I don't know if that's the case with the neighbour kids (they may "just be that way"), but yes, inbreeding can casuse lots of mental and physical defects.

Yes It does

Not always. The Jews are known for keeping in very tight circles, but they are still very intelligent.... devious, too

dont know about dumb but it makes them have 3 eyes or one leg

It probably is, more people these days seem to want to bang their own family members.

yes

yep, which is way africa is in such crisis, they interbreed within their small tribes

no, most wild animals are inbred

The deep south...that is all.