Hash browns. From the slurred pronunciation, by
drunk punk boys in Seattle's University District in the '80s, of the word "bags," meaning bags of potatoes, specifically Food Bank hash browns stockpiled in
punk households.
"We still'ave those jjjags... ofp'... tatoes o'er... ere."
-attributed to
Sergio
"You'll be eating jags at
Beth's on Aurora"
(from <i>Frozen
Beer in the Microwave</i> by 13 Helicopters)