Someone being a complete utter cuntbag.
Stop being such a cunt you twat.
by dontbeatwat.. February 8, 2017
The act of scraping one's nails down another person's arm to convey anger, resentment or the recognition of a derogatory comment.
Chris: 'I fucked your mum'
John: 'Well, I'm going to have to twat you one'
by C. J. Lynch & D. E. Knight December 8, 2012