Got this from Nanny News. Not sure whether they think our readers are childish, or that this site makes readers vomit. But, in any case, here you are:
10 signs your child is about to throw up. (Some Synonyms, from Oz)
But it seems to me this just scratches the surface. Our own experience was the EYM would stand up in his bed and scream for hours, until he vomited on his own feet. Then, satisfied, he would happily lie down and go to sleep in same. Anyone else want to share?