To study or revise; become informed about a new subject. Possibly Jackspeak (UK Royal Navy slang). Can also be "buff up".
by Strigulino November 08, 2013
To apologise insincerely to appease someone in the short term, in the way that a dog will look submissive while being scolded but will repeat the same behaviour again once their owner has gone.
I sent a complaint and they wrote back with an apology, but they were just dog sorry as it happened again a week later!
by Strigulino January 30, 2017