Green’s Dictionary of Slang

a telling-off, a scolding.

1968		W.R. Burnett Cool Man 16: The police [...] were still smarting from the reaming they’d received in the press.
1979		J. Hurling Boomers 96: Here comes old Blanket Ass to give us a reaming.
2003		Lord of the Flies ‘English comprehension’ posting on Madeleine Begun Kane’s Message Board 24 Sept. 🌐 Am I turning you on? That was not my intent, but sometimes odd things turn sexual deviants on, just as in the NAMBLA case? So, ready for a reaming?