ITT: Too Much Information

It'd be no blood... it's his mother's ex-husband's brother/sister's child o_o

Second cousin = no birth defects, I believe, though I once asked that in class and some people jumped to conclusions
I haven't even met any of my second cousins.

I've once been turned on by my little sister (7 years younger) tickling me...
Ogod that sounds so much worse in writing than it actually is.

Well, let's take a look at it.

brother/sister: only slight variation in genes
cousins: 50% of the genes are from the same source
2nd cousins: 25% of the genes are from the same source
Third cousins: 12.5% of the genes are from the same source

I think the cut off for incest is second cousin. So if you have a common great-great grandparent with somebody, they're still free range.