bubonic, adj. — Green’s Dictionary of Slang

bubonic adj.

[SE bubonic plague which devastated Europe during the 14C Black Death]

extreme, notably powerful.

1993		Snoop Doggy Dogg ‘Gin and Juice’ 🎵 Dr. Dre came through with a gang of Tanqueray / And a fat ass J, of some bubonic chronic that made me choke.
2004		Scottish Nous 🌐 Bubonic Chronic That’ll Make You Choke.