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
(..) I don't have cooties. - Yeah, but maybe I do. - Cooties, I can handle. All right. Goddamn, that's a pretty fuckin' good milk shake. Told you. I don't know if it was worth $.... but it was pretty fucking good. Don't you hate that? (..)1994 Pulp Fiction
(..) Martin and Lewis. Did you just order a $. shake? Mm-hmm. That's a shake. That's milk and ice cream. - MIA: Last I heard. - That's $.? You don't put bourbon in it or nothin'? - No. (..)1994 Pulp Fiction