Used as a greeting. Usually an isolated nickname repeatedly used by one individual to refer to another unfortunate member of a group of friends. The term is used in most emails and particularly text messages sent to the friend. The nickname Dinga is never spoken, only read. Typically used by a geek and unintentionally tends to lessen the merit or reputation of a person.
Dinga you coming the Zoo Bar tonight? Wanna hang later Dinga? Dinga give me a bell later so we can hang! Wanna hang after work Dinga?