to flame OED figurative
b. Of persons: To burn (with envy, fury, indignation, etc.); to look
angrily or passionately upon. to flame out, up: to break out into
open anger or indignation; to ‘fire up’.
1548 N. Udall et al. tr. Erasmus Paraphr. Newe Test. I. Matt. xxii.
f. 'Whiche wholy flame with enuy and hatred'.
1681 J. Crowne Henry VI i. iv. 49 I flame with fury to be at it.
intr. slang (orig. and chiefly Computing). To rant, argue, or harangue, esp. via an electronic medium (such as e-mail or postings to a newsgroup); to send an inflammatory, abusive, or (esp. in early use) inconsequential e-mail or posting, usually as a hasty response or in a rapid, angry exchange. Also trans.: to send (a person) such a message. Cf. flame n. and adj.
1981 CoEvolution Q. Spring 31/1 Flame, to speak incessantly and/or
rabidly on some relatively uninteresting subject or with a patently