Don’t celebrate against your former club
Often seen as a show of respect, and though the rationale behind it is generally admirable, fans know how good it feels to score a goal on a Sunday morning in a park, so they must understand how good it feels to bag one in a high pressure game in front of 40,000 people. That doesn’t matter, though, any semblance of emotion other than mild regret and a player can go from hero to villain in less than a minute.