Indonesian slang language is not an official language of Indonesia. For example, "mobil aku Memek bokep bali gendut. for "my car". This page was last edited on 28 Januaryat This is, in part, due to its vocabulary that is often so different from that of standard Indonesian Memek bokep bali gendut. Malaysian and also because so many new words both original and foreign are quite easily incorporated into its increasingly wide vocabulary list. Much of the slang evolved from the Betawi dialect.