Spitting.
Shirts under shirts.
Referees playing on after injury time is over to allow a team a scoring attempt.
Officials trying to be mates with players.
The list is endless but the following immediately sprang to mind:
The fact players seem intent on turning football into a non-contact sport with all the diving/feigning injury that goes on these days.
Time wasting - I came to watch you play football not to watch you standing around doing f*** all.
All the rubbish managers talk these days/mind games - no one believes them so if they want a career not answering a question with a proper answer why don't they go into politics?
Most of the ideas/announcements from UEFA and FIFA.
Coloured boots - wtf is that all about?
Booing at half time regardless of the score
Shouting "WWWHHHHHOOOO" whenever a sub comes on
Waving towards the camera when sitting behind the player taking a throw in during a televised game
Managers having a go at the fourth official, it's bad enough when they have a go at the ref but the fourth official doesn't make any of the decisions, what do they expect him to do.