Ma-ma-se, ma-ma-sa - A fancy way of saying 'whatever' but with more attitude and

A fancy way of saying 'whatever' but with more attitude and less brainpower. It's like the verbal version of a shrug.

When asked why he missed the test, he said, 'Ma-ma-se, ma-ma-sa.'

She texted, 'Ma-ma-se, ma-ma-sa,' when her brother yelled at her for eating the last slice of pizza.

He responded to the whole conversation with, 'Ma-ma-se, ma-ma-sa,' and went back to gaming.