There's no way to informally address a superior without a salutation or a name. I have always found this really annoying. Male friends of roughly equal age te

There's no way to informally address a superior without a salutation or a name. I have always found this really annoying. Male friends of roughly equal age tend to call each other "machang" It's interesting how the subsequent 'you' turn 'umba'. Dude, you didn't tell me about the class. The 'you' there is usually turned in to umba.