Green’s Dictionary of Slang

1. (US) drunk.

1668		J. Wilson (trans.) Erasmus Moriae Encomium (1509) 8: [A]t such a time when he had been well heated with Nectar.
[1671		Milton Hist. of England 117: The watch-word was [...] Draw your Daggers; which they observing, when the Britans were thoroughly heated with Wine (for the Treaty it seems was not without Cups) and provok’d [...] dispatch’d those Poniards].
1900		H. Garland Eagle’s Heart 83: A couple of whisky-heated cowboys rode furiously up behind Mose.
1989		P. Munro Sl. U.

2. (US black) angry.

1998

Big L ‘Ebonics’ 🎵 The studio is the lab and heated is mad.