Chelsea manager Jose Mourinho is not exactly renowned for his subtlety or calm and collected approach to high-profile situations.
While he evidently wears his heart on his sleeve - to coin a slightly tired cliche - the popular but often controversial Portuguese can often be seen wildly celebrating important goals scored by his own teams.
The most famous example of which was probably the euphoric touchline dash following Porto's goal against Manchester United in the Champions League clash at Old Trafford.
On Sunday afternoon, it was United's cross-city rivals who witnessed Mourinho's habit of failing to adequately contain his emotions.
In a game of huge importance in the early stages of the season between two title contenders, the 50-year-old could not hold back his glee at striker Fernando Torres' late winner following a mix-up between Joe Hart and Matija Nastasic.
Following the goal, Mourinho instantly turned and made a run for it beyond the Chelsea bench and into the crowd.
Watch footage of the epic scenes above - with thanks to 101 Great Goals.