One mark that distinguishes humans from nonhumans - aside from elephants - is that humans have funeral rites; they regard something as due to the dead and have for a long time. Indeed, since burials leave archeological evidence, we know that they occurred as long as 300,000 years ago, as a practice among the Neanderthals. Even when you put The Fun in Funeral, and Hilarity Ensues, the humor tends to be dark and the characters nasty. One funeral practice, however, will put the characters on the evil side, no matter how respectfully they carry it out: Human Sacrifice.