After watching some recent Premier League games, it is frustrating yet again to see players aggressively telling officials to f**k off right in their faces to no disciplinary reply. Vardy did it to Oliver after awarding Liverpool a penalty and Ozil did it to Pawson presumably as he told him to hurry off the field during a substitution. Whilst technically offensive/insulting, I would be happy to see PL officials even caution for this, but they never address it - no excuse for when it is done directly to their face.