Why on earth was he smiling so much last night? Obviously, seeing his former Shield brother not having his own way once will have left Reigns ver content with life indeed, but the smirk on Roman's face left you a little worried. Worried that he was suffering a stroke or that he had taken a severe amount of laughing gas. It was just weird. The smiling fits the gimmick when he's suffering in a match and 'getting off' on the pain, but he can't be using it too much as this opening segment of RAW proved.
