I don’t find cannibalism strange, I have no problems with incest, but for some reason I find this icky. We are a strange species indeed.

To carry forward the family lineage, many fathers-in-law donate sperms if their son is infertile. In some instances, the brother-in-law has donated his sperm. While most want it to be a discreet donation to avoid emotional family drama, there are many cases where the families discuss the issue openly.