"What"s the most disgusting food you can imagine?", you might ask your students. Whatever they come up with, I would bet that some people, somewhere, eat that sort of thing with relish. I would doubt, though, that any of them will mention insects - but here we have an article about the world-wide custom of eating insects (or entomophagy, as it"s formally known...and no, I"d never heard of that word either).