He was filled with 'the milk of human kindness'. [=he was filled with kindness; he was very kind]
They 'milked' [='exploited'] their advantage for all it was worth.
greedy landlords 'milking' their tenants of all their money
(..) where the dog dies? Oh, yeah. That's not... What about that time, with Mag. When Riley laughed so hard, milk came out of her nose. Come on. Yeah, that hurts. It felt like fire. - It was awf... - Okay, okay. (..)2015 Inside Out