Don't do it! You have no idea how old the meat is, and having worked in a kebab shop (and a major chain one at that) i know that they would take the meat on the stick at the end of the day, refrigerate it over night, then cook it again all the next day, then refrigerate it again the next night, cook it again the next day............... meat should not be cooled and re-heated more than once - even if its "fried" again before you get it, it is still not healthy.