Many urban legends are framed as complete stories with plot and characters. The compelling appeal of a typical urban legend is its elements of mystery, horror, fear or humor.Often they serve as cautionary tales.ecause people frequently allege that such tales happened to a  friend of a friend  (FOAF), the phrase has become a commonly used term when recounting this type of story. Sometimes urban legends are repeated in news stories, or distributed by e-mail or social media.
We have mast cells in the stomach wall. Somastatain-which is produced from d cells in the stomach wall is a known mast cell activator. We also know stress-in particular substance p and CRH also cause mast cells to spill contents. Histamine which we know is a chemical constantly released.
(Science: cell biology, immunology) resident cell of connective tissue that contains many granules rich in histamine and heparan sulphate. release of histamine from mast cells is responsible for the immediate reddening of the skin in a weal and flare response. Very similar to basophils and possibly derived from the same stem cells. two types of mast cells are now recognised, those from connective tissue and a distinct set of mucosal mast cells, the activities of the latter are T-cell dependent.