@Elmithian
Yup, there are lots of type of it, some will very sour, can make you feel >*< like that emoji. Of course after you eat too much, you will feel it sweet (somehow). In Vietnamese, it is called "Ô Mai" (pronounce is Ou Might or OH MY, if you has the chance to go to Vietnam, you can try to find it, in other language, sorry I dont know)