It's a catch all word. My husband & I lived in Hawaii for 25 years - this is similar to 'da kine'. Try it! It will roll off your tongue... Use it when you can't remember a word. Just substitute galongwallah. It always works!
Scott: "Hey Chad, how was your date with that girl from tinder?"
Chad: "It was really weird, we didn't except goongieying. I can't smell anything except shit now."