Galongwallah
It's the word you use when you're too tired to think and your brain is on vacation. It's like a lazy version of 'whatever.'
'I don’t care what you said, it’s just galongwallah,' she said, then went back to sleep.
'He said, 'that’s galongwallah,' and walked out of the room.'
'I told her it was galongwallah, and she believed me.'