Disgusting, trashy and catering towards the lowest common denominator pretty much nails this. A perfect example of catering towards the kind of people who are really into toilet humor. How is the idea of eating something related to animal feces not trashy and gross? This is the sort of nonsense i'd expect to see in a crappy dime store or even Spencer's Gifts (like a joke section that sells that fake vomit and dog poop). Not what I want to see at a Disney park. The only positive thing about this is that it'll be easy enough to ignore.
I'm quite aware of the target audience, and i've seen things like this (unfortunately) marketed to kids. It doesn't make it any less gross and trashy. I don't consider toilet humor, ESPECIALLY in regards to food, appropriate at a Disney park. Even if you're actually into that sort of thing...
I want to mention that i'm not so prudish that I haven't ever gotten a kick out of toilet humor. But I draw the line regarding food specifically made to resemble poop, and toilet humor as a whole has no place in a Disney park (not appropriate at all).