What's the big deal about the boiled sheep's head? I've had something like that before (it was roasted instead). It's actually pretty good, as long as you don't look at it too much
I don't see what the problem with eating ant eggs or sheep heads (although that picture is pretty damn creepy) as long as they taste good. Eating something with live flies that might start living in your intestines is another story.
I find it fairly gross to consider eating those things myself, but thankfully culinary superheroes like Anthony Bourdain, et al, are there to desensitize me to such foods.