As we get ready for yet another new season, the pressure on managers to succeed is as high as it has ever been. It is that pressure that causes football managers to lose their cool and, occasionally, have the odd rant. Most of the time these tantrums are kept out of the public eye. Sometimes, however, they are unable to contain themselves until they are out of the public eye and ear. The anger levels required for them to lose it in public means that their meltdowns are often pretty entertaining.