"Bud bud" is the sound Indians (brown ones not red ones) make when they talk. My mate reckons they also say "ding ding" afterwards, but I don't see it.
Synonyms for Bud bud
On this page, you will find 30 slang terms related to bud's. Some of the top words include: Dong, toss, spud, vat iz, punjabjab, and 25 more.