Greging
During the F**kface era, for several episodes Andrew had a mystery guest say “Previously on F**kface” at the start of each episode. He then had Geoff and Gavin guess who it was. When they finally guessed correctly, Andrew denied it, He then tried to rationalize his denial but eventually admitted the previously on F**kface guy was Greg from accounting. So in essence Greging is to flat out deny the truth.