Chicken
Yes and No... I guess it depends on the person. For me, I know when its coming up, usually I didn't chew good enough or took too big of a bite and it just comes up.
But I have experienced eating something and then maybe 20 minutes later it just makes me sick and at that point I think its too far in the intestinal track to even try and throw it up. I have felt the wretching and feeling my intestines spasm as its trying to bring the food up more, but it hurts pretty bad.
When I burp I know its coming up... when I hiccup, it's going down for me. Funny how that works.