“Oga Madam” is used as a respectful or sometimes humorous address for someone in charge or who has a strong presence. It can also be playful, referring to anyone who acts as if they’re in control. For instance, in a workplace, you might call your boss “Oga Madam” to show respect. Or, if a friend is playfully bossy or taking charge of a situation, you might use this to tease them a bit.