2.cp is the abbreviation of the English word "couple", which means "one pair, one pair, object, husband and wife". Dd is the acronym of the Chinese word Didi. DD, as an onomatopoeic word, can be translated as "punch in, report" and extended to "contact me".
3. In addition, some netizens gave some funny meanings to cpdd: criticizing younger brother, having a lot of money, eating a lot of food, eating crispy younger brother, loving a lot of things, gambling on lottery tickets, eating chubby ... but these are all used in jokes, and the general speaking context of cpdd is related to people.