(jmj ) slang. exclamation. 1. Also: yum-yum. an exclamation indicating pleasure or delight, as in anticipation of delicious food.YUM-YUM definition in American English | Collins English Dictionarycollinsdictionary : dictionary : english : yum-yumslot black bullused for saying that food tastes or smells very good : After the party games there was some lovely food. Yum yum!YUM YUM | English meaning - Cambridge Dictionarydictionary.cambridge : dictionary : english : yum-yumslot black bull sinal roleta bet365