Shall I be mother?

"Shall I be mother?" is a British English expression that is commonly used when offering to pour tea for other people in a social setting. The phrase is a polite way to ask if anyone would like a refill of their tea cup or if they would like to be served first. It is often used in situations such as a tea party or when hosting guests for tea at home. The phrase is considered to be a traditional part of English tea culture and is associated with a sense of warmth, hospitality, and civility.