Well, if you do, stay away from the brains. Cannibal cultures develop a lot of diseases from eating brains--perhaps this is why humans have a natural aversion to eating their own?
I doubt I'd be able to eat anyone close to me, even in a survival situation. If it was just some random ock who happened to be with us when we got snowed in, sure, I doubt I'd have much hesitation there.
Two good cannibal movies:
Alive,
Ravenous. There's also another film about the rugby players called
Stranded: I've Come From a Plane That Crashed in the Mountains. That's more of a documentary I believe.
I can't imagine an ancient elder would taste all that good though, probably very sinewy.
I take hypotheticals pretty seriously...anyone remember my mad rich guy with a tiger question?
