doing alright, livin the high life, content, doing good, got a good buzz going, have a full drink, good, better than expected (caution never to be asked to someone, straightbox only works as a response)
'Hey Creep, you need another red stripe?'
'Nah I'm straightbox'
or
'How's the Wild Turkey hunt?'
'straightbox you yankee bastard'
Incorrect usage - Butters: 'hey you straightbox?'